What is this?

[Flyflicker]

http://reefcentral.com/gallery/data/568/78908freshwatershrimp.jpg

[Gobydude777]

Looks like a large Coepod or Anthapod to me. Nothing to worry about in that case.

[Flyflicker]

Do these Coepod or Anthapods look like freshwater shimp because this is exactly what they look like to me.

[Mike O'Brien]

that is an amphipod, another very benificial detrivore.

[Flyflicker]

Great to know.. Thanks for the help.