shrimp? id please.

[Reef Puffer]

ya amphipod looks about right according to this http://simple.wikipedia.org/wiki/Amphipod. thanx for your help guys. my next question is how safe are these things? the little ones r food ide say but what about the larger ones? what do they eat? my small fish? i guess i have some research ahead of me now dont i.... thanx again guys.