Had the crap scared out of me the other day when cleaning some live rock in my sink. Was rinsing it under the tap, and out crawls this 2 inch black ugly thing, looked like he was ready for a fight. I nearly dropped the rock.
And this live rock is 10 years old in this tank, so he must be pretty old....
Have never seen a crab before in my tank, probably have a few others then, that never show themselves.
Use to have a big Green Bird Wrasse, that would need anything that resembled a crab, shrimp or snail. But I guess he never found this one.
How long do these crabs live?
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