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FAQs about Marine Crab Behavior

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Missing "Presumably Dead" Fish  4/8/12
Hello Everybody...hope you all had a great holiday weekend!! 
  I am kind of freaking out here...I had a Domino Damsel that had been sick for a couple days ( I think it was Ick, the last couple days he had gotten spots, then lost his color and got a cloudy eye but still ate and did "laps" with my Yellow Tail ).
<Territorial fighting>
 Well, I went to bed at 5:30am this morning
 and I saw him before going to bed, unfortunately when I woke up at noon he was no where to be found (even after feeding my Yellow Tail Damsel...and the Domino always came out to eat.)  So, I tore apart my tank looking in holes in the rocks and everything and am still unable to find him :(  I would assume he is dead and now am worried about my water levels going crazy.  Can you help me out in any way with this?  I have realized that because of the "Ick" I will probably eventually lose my Yellow Tail and my Scooter Blenny, but now I'm worried about my Condy and my Feather Dusters due to water level craziness because of not being able to find a dead fish!!  I do have 6 crabs
<Full ones>

 and 3 snails ( all of which I found while looking in the tank )...do you think that it's possible that they could have eaten him all up before I woke up today (he was alive when I went to bed)??  Any help would be greatly appreciated!!
Thank You in Advance,
<Ah yes... consumed. Bob Fenner>
Re: Missing "Presumably Dead" Fish  4/8/12

Wow, in a weird way that kind of makes me feel better!!
<Mmm, perhaps certainty of even a bad outcome is preferable to not knowing>
  I will still keep an eye on my parameters (as usual) but thank you, you have put my mind at ease :)
Have a great day and thank you sooo much!!!
<Welcome! BobF>

Gecarcinus quadratus Molting and Care 4-2-2008 I have 2 Halloween land crabs <<(Gecarcinus quadratus)?>> I have 2 Halloween crabs and one of them shed last night for the first time and it looks as if all his legs are missing except for his 2 front claws. <<A bad molting; http://www.afsc.noaa.gov/Kodiak/shellfish/cultivation/crabGrow.htm  .>> Do his legs eventually grow back in? <<Perhaps with a few successful moltings. What are you feeding? What is the environment? Consider soaking the food in a marine iodine supplement every so often. Read here; http://fireflyforest.net/firefly/2006/05/28/Halloween-crab/  and here http://www.wetwebmedia.com/marine/inverts/arthropoda/crabs/swcrabs.htm  and one more http://www.wetwebmedia.com/marine/inverts/arthropoda/crustace.htm  >> Thanks, <<Welcome.>> Angie <<Adam J.>>

Anemone Crab Molt taking too long?   9/28/07 I have an anemone crab that I just purchased on Monday night. As soon as I introduced him/her to the tank it <?> ripped off both it's pincer claws within an hour. I would have thought the angry clown fish might have done this except I saw him do it to himself. I removed him to a tank by itself and Tuesday night it had begun to molt. Well now it's Thursday and he still hasn't finished the molt. The little guy has managed to get everything off but can't seem to jettison the old exoskeleton from the rear. He is still alive but hasn't eaten since he began this whole ordeal. I've never had one take this long so is this normal? Or is he in trouble? I think this was probably something he had started in the dealer's tank (and I didn't notice) and I hope by moving him I didn't sign his death sentence. Thanks for the insight Karen <Is highly likely either a lack of nutrition, dearth of iodine, and/or alkalinity/alkaline earth imbalance/paucity. Please read here: http://www.wetwebmedia.com/swcrabdisease.htm and the linked file above labeled "Crab Behavior" Bob Fenner>

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