[mmille9905]

I am sure there is someone here that knows more than me, but mine do not mess with anything all they do is feed off of the live rock eating algae and uneaten food. If you have a lot of rock you may not see them very often. The books say that they can eat fish that are smaller than them if they were to completly run out of food, but that is super rare if ever. Also they stay pretty small so not to many fish are smaller than them anyway. I am not sure what size tank you have but I do know they get along fine together. My friend has 4 in his 55 and they dont pay any attention to each other. Mickey!