Lysmata amboinensis (Indo-Pacific Cleaner Shrimp).

Cleaner shrimp are a great natural tool for Ich and other parasites on your fish. These shrimp will actually eat the parasites right off your fish, if the fish is willing to let the shrimp. Most medium to large size fish will allow this to take place and often seek out the shrimp for a little touch up. Excellent detritus eater too. Recommend 1-2 per 50 gallons.