Small Shrimp???

[sultan1]

I have a 55 gal fish only tank. I introduced a small piece of live rock recently and very small shrimp seem to be all over my tank now. The fish seem to like hunting them. Is there any problem that I should know about?

 

[nacl-h2o]

They are probably amphipods a good thing to have(free food for your animals).

 

[bang guy]

....or they could be Mysid Shrimp. Either way they are a very beneficial food source.