blue hermit crab

Their plotting a attack on the snails. Their just going over the plan & making sure everyone knows their job......LOL....:dance:

Not sure why they are gathering. BUT it is true that if the hermits are growing & want a larger shell, they will kill the larger snails..eat their guts & hijack the shell.

I always have larger empty shells in the tank, this way the hermits will hijack the empty ones first
 
Probably crowding a bit of food (snail). Do they have anything to eat? 15 is a pretty big table! Probably starving.
 
I thought it was funny, made me laugh. I have had them live in groups in my tank before. As long as they are not eating each other, they should be fine.
 
monolith.jpg
 
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