do not feed crays market shrimp. if you have been feeding your fish shrimp and the cray has got some, you will be seeing him get sick and probably die soon. that or you are incredibly lucky. either way just put market shrimp in the tank with the cray from now on. hope this helps!JayK1320;1790300; said:What kind of disease is this? the shrimp i feed is for my fish, it is market shrimp cut up into little pieces. Should I not do this for fear of hurting the cray? I have never heard this before, so I have no idea...If a piece hits the bottom it is hard to tell if he grabs a bit or not...I wouldn't want him to drop dead from something stupid like that...