i have herd that Chinese Algae Eaters some time will kill other fish by sucking on to them and eating away at the other fish i got 3 befor i found that out and the pet store did not have them down as Chinese Algae Eaters when i got them just Algae Eaters they have not hurt any fish yet so i was hopeing some one might say this means all the fish are friends and would never hurt each other i hope that is the case but i bet somes going to say when they grew up they may change and eat fish any way give as much info on this subject as can be