Posts Tagged ‘gravel’

The Post – Admiral Byrd, A Comforting Constant in Life

March 14, 2008

It’s been a day of taxes and bills and other aggravations…enough to drive any sane person to the comfort of their fiddler crabs. πŸ™‚

Admiral Byrd has been robustly marching around the tank, and no matter if he’s on “gravel hill,” the top of his “fake cave” or perched on “live rock” he stands tall and waves his claw. We just walked back in the house from dinner and the first sight to greet us across the kitchen was Admiral Byrd waving. Now we know deep down inside that he really couldn’t care less about us unless we’re a female fiddler crab, but still, on a tired night we could live in denial and pretend our “pet” is welcoming us home.

On a bit more serious note, I received a great comment from someone about my post on the death of the fiddler babies and how the Discovery forum person, Horseyhannah, said not to even bother trying to raise babies.

This person currently has living crab larvae – day 3 – and she’s offered a lot of ideas from her own experiences. There is SUCH good information and several suggestions for fiddler crab owners in her comments. I wanted to first say THANK YOU! And secondly, for anyone who didn’t catch the comment, just click here to read it.

She noted that she doesn’t use substrate on the tank bottom, which is interesting to me. I have heard others who’ve done the same, so I think there might be some merit to that approach. For myself this time around I will use the calcium substrate, since by the time I got that post, I had already started setting up the nursery tank with the new sand. So I’ll see how the sand “experiment” goes. But still, her approach to not using substrate seems very interesting and if she wants to send any updates on how it’s going, that would be great. I imagine there are many others out there who’d like to know if that is a better way to go. So anyone with info on keeping the tank bottom bare, please do send along your experiences.

I also appreciated her kind comment about my blog postings – re my novel, the fiddlers, and my marriage. Many thanks. To respond to the requests in her comment:

1) – There are many more posts to come on the progress of my novel, Under the Pier, and about life in general.

2) – She asked if I could put all the fiddler crab posts together in one place for all those “crab junkies.” Well, have no fear – they already are. On the right-hand side of my main blog page, under the “Pages” listing, click on the page called:

“And What’s the Deal With All The Fiddler Crab Stuff”

Every fiddler posting is on that page with a live link to each and every post. So crab junkies – have a great time. πŸ™‚

For anyone who is following the progress of my “Author Journey,” or for the process and progress of my novel, Under the Pier, I’ve done the same thing. Each topic has a page with all the posts listed there, and live links to them.

If you should find your way to my blog on a page that doesn’t have the “Page list” on the right, just click on the Soul Mosaic words in my header and it will bring up the main day’s page. Then you’ll see the Page list on the right.

Well, I will re-group tomorrow. It is simply nice to know that in spite of irritating taxes and bills and other life annoyances, there are those constants like Admiral Byrd waving his claw no matter what time, day or night, that you walk in the room.

Happy Weekend to you all.

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The Post – Admiral Byrd is Peeking & New Aquarium Products

March 12, 2008

Some Fiddler Updates – New Product Technical Details and Romance

1) Preparations, Take 2, for the Fiddler Crab Nursery Tank:

I came home from PetsMart yesterday armed with calcium sand to replace the gravel in the nursery aquarium. That project will commence later today. The sand is actually something called Seachem Meridian Tidal Marine Substrate. It’s basically calcium carbonate precipitated from ocean waters by coral. It will stabilize the calcium and alkalinity levels in the water, and keep the pH from getting too low. Its porous structure and size supposedly are good for the growth of denitrifying bacteria. We shall see.

At the very least, it’s a dual purpose as I can also use this sand for the bottom of the land hermit crab cage I just bought. The land hermit crab project will be ramping up soon.

I also picked up some liquid food that should work fine for the larvae. I’d mentioned a product called JBL Nobilfluid that a gentleman from Finland used to raise his crab larvae. However the Nobilfluid is made in Germany and appears to be available in Finland, Germany, England, Italy and the UK, but I couldn’t tell if it was available here in the US. I could get it from a UK website but between the exchange rate and the shipping, I expect the cost is prohibitive. A JBL representative answered my email yesterday and said their product is not available in the US yet.

I found this new product at PetsMart called Kent Marine ZooPlex. The problem I had with the fiddler babies was trying to find liquid plankton to feed them. My mistake was getting live liquid phytoplankton, which made the tank toxic and killed them. I realized larval crabs need zooplankton, which is animal plankton = roughly translated: MEAT. Phytoplankton, being plant based, is the wrong plankton. Larval crabs are carnivores, not vegetarians. Anyway, Kent Marine ZooPlex is “concentrated aquacultured Marine Zooplankton” and is geared toward invertebrates including larvae. The bottle notes it can be used as a brine shrimp replacement. So this sounds like it might be just the thing for liquid feeding of newborn larval crabs who are too small to chase live brine shrimp around.

I will still need to get the dried brine shrimp eggs to hatch when I know I have a pregnant female ready to shed her eggs. The brine shrimp hatchery project will come a bit later.

2) How to raise the alkalinity of the water for the brackish tank without raising the pH?

The dilemma I have when using Instant Ocean to make up the brackish tank water for the adult crabs, is that I have to use it at about half strength. That way I get a salinity of about 1.010 instead of 1.020-1.024. The trouble is, that makes the alkalinity way too low meaning there’s not enough calcium in the water for the crabs when they molt.

I’ve tried adding Seachem’s Marine Buffer, to raise the alkalinity and it’s very successful, but it also raises the pH way up to 8.3. That’s fine for a marine tank, but for the brackish tank, the fiddler crabs seem to like the pH closer to 7.8-8.0 I have a constant battle trying to get the salinity low enough, the alkalinity high enough and the pH “just right” somewhere between a freshwater tank and a marine tank. When I use the Marine Buffer I have to then add something to lower to pH.

I was hoping to find something that would raise the alkalinity, but not the pH when I use Instant Ocean to make up the brackish water. Yesterday I came across Seachem’s Reef Calcium. The website description reads:

Reef Calciumβ„’ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain calcium in the reef aquarium without altering pH.”

I am going to try the Reef Calcium product and see if that solves the problem. I will let you know.

3) Romance: a humorous update for a Wednesday:

Ever since his success with Scarlett O’Hara, Admiral Byrd has been out there claw-waving up a storm. Melanie Hamilton spends just about all her time inside the live rock. Yesterday afternoon is the first time I’ve seen her out of it in weeks. I think she took to hiding out in the rock when Scarlett O’Hara was living in the nursery tank. With Scarlett temporarily gone, Melanie was the total focus for Admiral Byrd. I don’t think she liked that.

Anyway, after giving birth, Scarlett O’Hara has been eating almost non-stop. I think she finally slowed up a bit yesterday, but she’s still pretty ravenous. In fact yesterday, I dropped a shrimp pellet in the tank and Scarlett scrambled up and caught the thing in mid-drop. It never even touched down on the gravel. And she’s pretty good. No fumbling and bobbling the shrimp pellet. She spotted it, she jumped, clutched it to her chest and landed on her feet, eating the pellet before she landed. She could probably earn a spot as an outfielder for the Red Sox.

Unlike Melanie Hamilton, Scarlett hasn’t been too concerned one way or another with Admiral Byrd’s where-abouts. She doesn’t run from him, or toward him. She just eats. Still, I don’t think she’s averse to his presence as she’s spent a fair bit of time in his lair, the fake rock cave, while he walks around waving his claw. I have to wonder if he realizes she’s sitting in his house?

Last night I turned off the tank lights, shut off all the house lights and went upstairs to bed. A little later I had to come downstairs for something and walked by the tank. Even in the dark, I could see Admiral Byrd standing there on his gravel hill, waving his claw. Total darkness, but the crab is still out there trying to get the attention of the ladies of the tank. What dedication.

He is also very funny in his pursuit of Scarlett O’Hara. He climbs to the top of the live rock, to wave his claw of course. Yesterday while claw-waving, he caught sight of Scarlett down on the gravel next to the live rock. He stopped waving, tip-toed to the edge of the rock, peeked over the edge at her to see which way she was going, then, like a teenage boy in love, scrambled down the rock and followed her around all the while waving his claw.

So watch out Scarlett, Admiral Byrd is peeking.

The Post – The Fiddler Babies are Dead, But We’ll Start Over And Prove Horseyhannah Wrong!!

March 10, 2008

The fiddler babies are dead.

I am sad, because I really did like the fiddler babies. I looked around on the web last night for clues to their demise and that’s when I got ticked.

The Discovery Channel’s Animal Planet Online Forum had a discussion of how to raise fiddler crab larvae. “Horseyhannah,” a senior member on the forum basically told a member who asked how to raise fiddler larvae that it’s so hard and requires hundreds of thousands of dollars of equipment to simulate ocean environments, waves, tides, etc. so it’s really not possible. Horseyhannah told the person to just enjoy the adult fiddler crabs and don’t bother to raise the babies. Needless to say, the person asking the question was polite, said thank you, agreed it will probably be hard, but would still like to know horseyhannah’s info source…just in case she decided to raise them anyway. My answer to that person is: GO FOR IT!!!! PROVE HORSEYHANNAH WRONG!!!!!

In fact, I am determined to do just that. In my book, Horseyhannah has thrown down the gauntlet and I am determined to prove her wrong.

I will concede failure on this first attempt. I am sad as I was so looking forward to having some fiddler grandchildren survive. I was frustrated and disappointed because contrary to the advice above, I think it was not only possible, but it was happening. Because I lost them so quickly, that tells me something overwhelming happened in the tank to kill them all off at once.

To review, by Friday afternoon, there were no babies moving around. It was a rapid decline, and up until that point, we still had quite a large number alive. I have to conclude it was a water quality issue and I think the biggest culprit was the live phytoplankton. But to go through this methodically, let me look at several things. If it were salinity, ie they didn’t like the marine environment I don’t think they would have lived that long in it to start with. I suspect the following things were problems:

1) I used gravel and we did lose MANY babies because they burrowed into the gravel crevices and died there.

2) The nitrite levels in the water spiked suddenly and got very toxic. Thoughts on this point:

a) I didn’t get the tank set up early enough to have a mature and well-functioning nitrogen cycle.

b) I either fed them the wrong food, or too much, or both. The wrong food or too much food meant it didn’t get eaten, sat in the tank and rotted. OR it created a huge algae bloom that raised nitrite levels beyond a tolerable level.

c) I didn’t change the water fast enough once I realized the nitrites were a problem, though given the phytoplankton issue, I was probablly fighting a losing battle from the beginning.

d) I no doubt lost babies doing the water changes because my only option was to bail water out of the tank and pour it down the drain

So boys and girls, what have I learned from this first attempt that can be done better next time?

1) I will use calcium sand not gravel. Aside from the fact that the babies won’t get trapped in the substrate material, the calcium sand will provide enough calcium for the babies to stay healthy during many molts.

2) Figure out the right food and amount. The gentleman from Finland whose article I quoted a few days back (he raised the Red Clayed Mangrove crabs) fed his larval crab Artemia…brine shrimp. He had a hatchery right in the tank to have a fresh supply. He also used something called JBL Nobilfluid for when the larvae were too small for the brine shrimp. This product is probably similar to the Small Fry liquid food I was using. It it made by a company in Germany and I’m trying to find out if it is marketed here. It has 50 different vitamins and minerals as well as brine shrimp and is geared for newly hatched aquatic animals too small to tackle live brine shrimp yet.

3) DON’T USE LIVE PHYTOPLANKTON this time. In spite of an almost 50% water change, I could not get the nitrite levels down. In fact, they kept rising. Now I am finding information that phytoplankton excrete nitrites. The better the phytoplankton did, the higher the nitrites. And with each feeding I basically inoculated the tank with more. I created my very own algae bloom which released such high nitrite levels, the babies were doomed.

Frankly, the tank seemed to be doing okay until I started using the phytoplankton. I would feed the liquid Small Fry food and while the tank would be cloudy initially, it cleared quickly, telling me the babies ate the food. At that point, in spite of it being a new tank with an unestablished nitrogen cycle, the nitrite levels stayed pretty low. However, once I started using the phytoplankton, the tank got cloudy quickly, the nitrite levels spiked, the water had a greenish tint, and the larval crabs numbers dropped dramatically. So, NO phytoplankton.

4) For water changes, instead of bailing water out, I will use the water bubbler as my “filter” to keep the babies in the tank, and let gravity siphon water out of the tube. I have the bubbler’s pump set up beneath the tank and have a regulator valve in the line to keep water from back-flowing from the air bubbler, into the pump. If I remove the valve and let the tube sit in a bucket, it will slowly siphon off water through the bubbler. This should let me slowly get water out for changes, without bailing larval crabs out of the tank and sending them down my kitchen drain.

So. I will start over. Admiral Byrd is doing his part, trying to get Scarlett O’Hara to notice him. Scarlett O’Hara has been eating and hanging around Admiral Byrd’s cave den. I figure it’s only a matter of time before Scarlett has eggs again. Therefore, tomorrow, I will take down the nursery tank, clean it out, get some calcium sand, and get that tank up and running again with the live rock in it, and get that nitrogen cycle stable.

We are going to try this again! My husband and I would love some fiddler grandchildren, πŸ™‚ and even he said that we must prove Horseyhannah wrong!!! Stay tuned.

The Gift – A Fiddler Crab Extra!! Meet the Babies!

March 2, 2008

fiddler-crab-under-100x-magnification.jpg

Okay. You’re wondering what in God’s name this thing is. Well, it’s one of the crab babies, at least my rough sketch rendition of one. (IfΒ  you want to see real photos of the zoeae and later larval stages of fiddler crabs, click here ).

It’s the best I can do. I’m spoiled because I am used to working in labs with good equipment.

In the lab I would have put an aliquot of liquid from the aquarium in a test tube, spun it down in the centrifuge, poured off the supernatant, and made a slide out of the sediment, which would be concentrated crab larvae, instead of chasing one unlucky soul all around the microscope slide trying to catch him long enough to see him.

I would have had nice stains to chose from to make the larvae show up better. Today I had McCormick’s yellow food coloring from Harris Teeter.

I would have had a nice Zeiss microscope with oil immersion lenses and fine optics. Instead, I have a Milben kids’ microscope, circa 1965, in a wooden case, with an EverReady 5 volt flashlight shining in the mirror to light the stage. (And if you want a kick, click here to see a similar setup to my microscope and wooden case. It even has the dissecting kit tool indentations in the styrafoam. I had those dissecting tools a long time ago. It says something when you search Google for Milben microscope and it’s listed under “antique sites.”)

I would have had a nice Zeiss microscope with a camera attached to photograph what I saw. Instead, I had to sketch it. I don’t have one of those neat electronic tablets to draw with. All I had is the “pencil” tool on my son’s Photoshop program that I barely know how to use.

So, I know, stop whining. I’m not in the lab anymore. Given all this, I still managed to catch one crab baby, watch him through my very “SUB-OPTIMAL” microscope, in food coloring stain, and draw you a WAY suboptimal sketch.

But still, what the sketch shows is the head part on the right, with two little “?claws” moving back and forth rapidly. It stretches out with the tail on the left. We could even see “material” moving through the crab from the head, out the tail. Yes, out the tail. My husband caught that one. So I guess we can assume the crab baby has been eating the food I served. πŸ™‚

In any event, minus all the fancy equipment, it’s the best I can give you, but still it’s something. I should note that this was a 100x magnification.

We have noted that Days 1 and 2 there was a fair reduction in numbers of larvae and my husband noted the blackened area that looked like a mass murder in one corner of the tank deep down in the gravel where many babies perished. Still, there are LOTS of babies swimming in the tank AND they are bigger than yesterday. If you hold a magnifying glass up to the tank, you can see tiny tails. So some are thriving after all.

If many many thrive, at least the guys at Fish Pros said they’d be happy to buy some from me for cash or store credit. That would be great. I’m always in need of new supplies. πŸ™‚

Salinity is almost “ocean” at 1.017. Should reach 1.020 later today.

Anyway, now you’ve “sort of” met the babies.

….about that centrifuge – it occurred to me I could take a small, capped plastic tube and tie a rope around it and spin it around my head. Then I thought, maybe even better – tape the tube to the inside of my washing machine and run it on the spin cycle. But leave it to my engineer husband: find a way to attached two capped tubes on a rod opposite each other, connect them to a power drill, and turn the drill on….THAT’S the best RPMs for the money. πŸ™‚

The Post – Nursery Update, Ethics, Parenthood, Friendship, and Just Being a Mere Mortal

February 25, 2008

Just a quick note this morning as I’m on the run. The next installment of my author journey is partially written. Those take me a bit more time. Pondering, reflecting, remembering. Lots to sift through. So those will resume this week.

For now, just to update – Scarlett O’Hara is still alive in the new tank – the “nursery.” Frankly, I was worried. I’d have felt better if I’d set that tank up last week and it had a week to run and settle out. I just hadn’t come to the point of “embracing” trying to raise larval crabs and when I did finally decide this weekend to try, it seemed like birth was imminent. Kind of a go/no-go response needed to be made ASAP.

Last night she just wouldn’t settle down in the new tank. Kept running back and forth, kept trying to climb the sides of the tank. Was there something wrong with the water that was hurting her? All the parameters looked great, in fact the water in the new tank was better than the original – that one’s overdue for a water exchange and the nitrites and nitrates in that tank are rising. So this one is actually healthier. However, certainly there’s other parameters I can’t measure. So my worry was that I’d put her in something I thought was better for her, but maybe I was killing her and couldn’t tell?

I wondered if she was just disoriented and couldn’t find a place to climb out of the water to get air. I noticed air bubbles escaping from her mouth at one point and was afraid she would “drown.” She has this lovely live rock with all kinds of crevices she could hide in, better than her old live rock, AND it’s much bigger so she can climb on top of it, but I thought that maybe in her stress she couldn’t find it. So I scooped extra gravel out of the original tank and put it in the new one and built her two gravel hills so she could walk up the hill and be partly out of water. She found them, but that didn’t seem to be the problem. She just kept running back and forth and climbing the walls.

My husband wondered if she simply couldn’t understand why the sides of this tank were so clean and where was all the microscopic algae she likes to eat? The other tank, though the glass sides look clear, apparently have microscopic algae on them because the crabs are always “picking stuff off” the sides and eating it.

Or maybe she was just so stressed out, she couldn’t relax and would kill herself with exhaustion?

I also noted last night that the formerly clear water in the new tank was now cloudy. I was convinced something awful was taking hold and maybe the live rock had something bad in it. If so, you would expect the nitrites to be rising. I repeated all parameters last night and the water looked good.

So by this point, who is more stressed? Her or me?

My husband said little, just said “It’ll be what it’ll be. You’ve done all you can.” I told him it’s not easy being “God.” He patted my back and said “At least not a God who cares.”

Anyway, I struggled with “should I just bag this whole thing and put her back in the original tank?” I decided not to add any more stress to her by moving her back. One of those – just let it go and see what happens, moments.

This morning the tank looks less cloudy. My husband said he came down and she was sitting quietly in the water, “tending” to her egg mass – ie – giving it pushes and pokes, as if turning them. When I came down, she had found her way to the top of the live rock and was just sitting there on top of her world, soaking up heat from the lights and appearing totally relaxed. (Or is she dead? Should I poke her? πŸ™‚ Just kidding).

All joking aside about my being so worried, I guess I felt guilty. As I said to my husband – Did I put her at risk of dying because I so wanted to try and raise the babies? Did my ego cause harm in this and should I have just left it all alone?

The ethical questions are never clear or easily answered. It’s like being a parent. You try your best, knowing that even when you do, you don’t know if you’ve made the right choices. And in your less than perfect moments, and we all have them, you wonder, will they be okay? Why does God entrust such a big job to mere mortals?

I think Lee Woodruff’s final comments in her book, In An Instant, apply here, at least for being parents, maybe not for being God to fiddler crabs. She worried about how her kids were affected by all the turmoil and intensity when her reporter husband, Bob, was in the hospital with a head injury. She had to be away for long periods to be with him. Things were in an upheaval even though family and friends were looking after things. I so loved her observations, because they are the truth. In thanking her kids she added:

“May you always remember that there are no perfect parents, just mothers and fathers doing the very best they can. And there are no perfect spouses either, just those who love each other enough to stand by “for better or worse.” Don’t be fooled: that kind of endurance is, perhaps, the greatest expression of love.”

I think she could only come to that lesson because of the messiness of life. I think it’s the messy low moments that teach us the most about being human, and about understanding the “human moments” in others. Those times teach us about being compassionate to ourselves and to others, especially when life is at its least pretty. We all want to look like we’ve got it together. Sometimes we do. Sometimes we don’t. Life gets messy. Thomas Moore, a former Catholic monk, in his book, Care of the Soul, I book I read, reread, dog-ear, highlight…in three different colors, quotes something from the Renaissance humanist Erasmus, that applies. Erasmus wrote in his book, The Praise of Folly, that “people are joined in friendship through their foolishness. Community cannot be sustained at too high a level. It thrives in the valleys of the soul rather than in the heights of spirit.”

So, from one very imperfect human, friend, wife, mother, fiddler crab God, go gently into your Monday. It’s really okay, no matter how it goes.

The Post – Is Birth Imminent?

February 24, 2008

I will be returning soon to the evolution of my novel, Under the Pier, but given the goings-on here, I have to take some time to tell of events unfolding in the fiddler crab world.

I decided to see if it is possible to raise at least a few of Scarlett O’Hara’s and Admiral Byrd’s babies, should they survive birth. It’s a long shot, but I want to try. Scarlett looked really pregnant yesterday – that abdomen of hers is large and when she pushes at it, it’s like jelly. I have these observations again from my husband.

It is TRUE LOVE when your husband acts as midwife for your pregnant fiddler crab, keeping close eye on her while I ran out today to get a chunk of live rock for the aquarium. He even called me on my cell phone at the aquarium store to tell me that Scarlett was picking at the larval mass, pulling out a brown thread here and there and planting it in the gravel. He felt birth was getting close and I should hurry home with the live rock. I tell you, is that a friend or not? How many people would call you on your cell phone to let you know your fiddler crab is getting ready to deliver? πŸ™‚

To back up, we went to Petsmart last night and picked up a new 10-gallon aquarium, tank top, light, light bulb, thermometer….. yes, another whole set-up. My husband is laughing but then, he is a geek, just one with different interests, so he respects this endeavor I’m involved in.

In fact, he is working on setting up his own blog that will have all kinds of tweaky things that reflect his interests. When it’s up and running, I’ll be sure to mention it. He finds the most unusual and interesting things out there. To give you a sample of the man, when we are out on a date it is not unusual to walk through the parking lot and have him explain to me the mechanisms for the inner workings of car backup lights and such. I just love it. Going somewhere with him is always interesting and an adventure. Sometime I’ll have to share how he and I hunted down the overgrown boarded up command bunker for a former Nike missile launch site in Newport News VA. πŸ™‚ But a story for another time. Those are the kinds of dates I love. Anyway, I’ll let you know when his geek site is up and running.

To get back to fiddlers, I spent last night setting up the tank. This time I started with distilled water. We have a small water distiller and I proceeded to use up our drinking supply to make up salt water for the “nursery tank.” Mixed up Instant Ocean powder in the distilled water, set up the filter, and within a couple of hours, got the water parameters just about where I wanted them: pH 7.8, alkalinity 180, hardness >300, chlorine, Nitrite, and nitrates all zero. Salinity was about 1.008, a little lower than I wanted because I want this tank’s water to be an almost exact match for the main tank.

This morning I used some marine buffer to bump the pH up to 8.0 and alkalinity closer to 300. Added a bit more Instant Ocean to get the salinity up to 1.010. I seeded the new filter with a strip of “very well colonized” filter material from the old tank to jump start the nitrogen cycle, and brought home from Fish Pros the MOST amazing chunk of live rock – ALREADY had all kinds of marine invertebrates and microscopic algae on it because it had been in another tank that had just been dis-assembled. So, the live rock is well underway growing organisms and probably has another dose of nitrogen-fixing bacteria ready to go.

I debated about what to do with Scarlett O’Hara, leave her in the old tank and struggle with where to release her babies or put her in the new tank with plenty of room for all. Finally decided to take a chance and I’ve moved her into the new tank. She seems to be doing okay in spite of being rattled by being moved. I’m hoping it didn’t disturb her too much. It always shakes them up a bit to move them around. I have done my best to make her a good nursery and here she is free from Admiral Byrd’s claw-waving. I even took the heater from the old tank and gave it to her in the new one. I ordered a new heater for the main tank which should be here Wed. But I figured Melanie Hamilton and Admiral Byrd will be fine for a couple days with the tank lights to keep them warm. I figured “momma” needed it more.

By the way, the tank heater I use is a small one geared for 3 gal aquariums. It’s pre-set and can be mounted sideways with suction cups, and there’s no risk if it touches the gravel. It’s a Marineland Shatterproof Heater (10 watts) part number VTMD10 and found it online at That Pet Place.Β  Since my tanks are only a third full of water (to allow space for the crabs to get out in air), regular heaters won’t work. Not enough water for them to be fully submerged. And regular heaters are generally large and have to be vertical.Β  This guy is short and can be sideways. Keeps the tank in the range of about 78-80 degrees F. So for what it’s worth.

So…the nursery is up and running. So very much hoping that 1) Scarlett will do okay in the new tank; I would feel terrible if she doesn’t make it because of the move 2) the babies do okay.

Then all we have to worry about is how to sell off many many many many many grandchildren? πŸ™‚ I’ll keep you posted.

By the way, if you want to have a few seconds of just staring at some nice marine creatures swimming amidst coral, click on the Instant Ocean link above. Neat intro.

The Post – Admiral Byrd was NOT Worshipping Me or The Aquarium Light

February 11, 2008

Over the last 2 days my husband noticed that Admiral Byrd has been spending a LOT of time, meaning almost ALL of his time, up on top of the gravel hill or the decorative cave rock, or the live rock, or just about anywhere else in the tank, waving his claw. He looked so funny up on the cave rock. He seemed to be staring up at the aquarium tank light, waving his claw as if paying homage to a god. We figured either he held the aquarium light or my hand in high esteem.

My husband has joked that he thinks the crabs go inside the live rock so much because it’s actually their holy site. He thinks they’ve cobbled together a crude altar made of gravel and on the altar they’ve fashioned a shrimp pellet image of their deity, the hand that feeds them . . . basically mine. As he put it, imagine that every day a hand comes down out of the sky and places steak or shrimp or pancakes in front of us. That’s what it must be like every time my hand drops algae or shrimp pellets near them.

In any event we weren’t sure why Admiral Byrd decided to spend an entire day paying homage to me or the light. Why all of the sudden? There’s been nothing new going on in the tank otherwise, all three crabs have been actually pretty placid, out and about feeding, and generally happy. Was this some sort of designated crab “Holy Day” that just happens to coincide with Lent?

As it turns out, alas, neither the aquarium light nor my hand are the object of Admiral Byrd’s devotions. Melanie Hamilton is.

From the Fiddler Crab page on the Chesapeake Bay Program’s bay restoration site:

“When looking for a mate, he stands near the edge of the burrow, often alongside a string of other males and their (similarly well-maintained) burrows, while the females, returning from foraging, walk past. The male waves his large fiddler claw until he attracts the attention of an interested female, who then stares at him for a short period.. The male resumes his claw-waving, and if the female remains receptive, the male runs toward her, then runs back to his burrow, and repeats this motion several times until she either moves on or follows him to the burrow. ”

Apparently, mating behaviors take place not just when the female forages, but also when she molts. I happened to notice this pale, upside down body lying under the water filter this morning and immediately my heart hurt. I thought “Oh no! Melanie Hamilton died!” But not so. Looking closer, I saw that it was the pale ghost of Melanie Hamilton. It was that eerie translucent white, like Scarlett O’Hara’s was, though much more petite given that Melanie Hamilton is so dainty. Melanie Hamilton sat right behind it. I would have gotten pictures for this blog but she had tucked herself and her tiny ghost so far under the water filter that I could not get a shot. If only I had fiber optic cable, maybe I could get footage! I have concluded that the fiddler crabs have designated the “under the water filter space” as the “molting place.” All 3 have used it now. I think it has enough stretching room to shrug off the old shell, but is sheltered enough to keep everyone else away while their new shell hardens.

Admiral Byrd of course, was well aware of events in the tank. He was standing just a few inches from the water filter hoping to catch her eye. Alas, while Admiral Byrd is a true romantic and his efforts were truly heroic – I mean he has to be exhausted after almost 24-hours straight claw-waving – Melanie Hamilton is having none of it. She has turned her back on him and remains secluded under the water filter.

But anyway, the mystery is solved. Admiral Byrd doesn’t give a darn about the tank light or the hand that feeds him. He apparently can sense the approach of “molting” and was doing the crab Valentine’s Day equivalent of serenading his lady.

Sorry no pictures, though. I told my husband if he ever decides to spend money on expensive jewelry or clothes for me, I would prefer one of those borescopes like they use for colonoscopies. That would work GREAT in the tank for closeups of everybody! πŸ™‚

Coming up this week:

Now that you’ve gotten to know me a bit – a cross between sea life maniac and soulful – I’ll start to introduce some of the projects I’m working on. I’ll share what I’ve done, what I’m doing and where I see myself going. Children’s writer and illustrator, Uri Shulevitz, described three stages of a writer’s development at a conference about 12 years ago. I’ve kept them as a kind of road map in my development and will use them to describe what I’m doing.

Also to come, a Writer’s bio page of what I’ve already written.

Happy Monday!