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Old 07-15-2018, 03:07 PM   #1
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Canít find blue legged crab anywhere

About a year ago I introduced a small blue legged crab to my tank. It was a bother to say the least. It killed plants that I had growing and it even killed one of my snails. Anyways it was always shy when Iíd walk towards the tank and it liked to hide but I would always be able to notice it from across the room climbing on the live rock or on the sand bed. It used to climb a lot. Mostly on a tube I had starting at the bottom of the tank and going up and out of the tank for an air stone. Now I canít find the crab anywhere and the air tube and tall plants are gone so thereís nothing to climb but is is possible it escaped? My tank ammonia levels are 0 so I donít think itís dead in the tank. Iíve shined a light on the LR and I see no trace of the crab. No shell or anything. But I also donít think it got out of the tank and died somewhere because I donít smell anything foul in my house. Is it possible the crab just comes out at night and is a really good hider? No idea whatís going on so any advice would be appreciated!
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Old 07-15-2018, 05:40 PM   #2
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Is it a hermit crab?
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Old 07-15-2018, 05:46 PM   #3
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Quote:
Originally Posted by bribo12 View Post
Is it a hermit crab?
Yes itís one of the small hermit crabs with blue legs and a pointy shell
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Old 07-15-2018, 07:09 PM   #4
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It probably died. A small crab like that shouldnít spike parameters in an established tank if it died.
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Old 07-15-2018, 07:33 PM   #5
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So should I move around some live rock to check things out? I see no trace of the crab, even the shell. Maybe it got stuck in some rocks, I just don’t want the decaying crab to crash my tank; it’s a 15 gallon tank
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Old 07-15-2018, 08:49 PM   #6
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Youíve described everything that a hermit crab does. Eat plants and algae and hunt for larger shells.
These hermits donít have the longest life spans and if has been gone for awhile is most likely dead. Not a real problem.
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Old 08-03-2018, 09:35 PM   #7
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Mine switch shells all the time if there arenít a bunch in your tank I assume it probably just crawled out and died shells probably in the liverock somewhere
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