I believe that one of my yoyo loachs is fin nipping my agassizi cory,2 of them have pretty torn fins and one of the 2 is just about dead and I'm fairly certain its the loach. I have 2 loaches, 1 is significantly bigger than the other and is the biggest fish in the tank. I have 3 corys, 2 loaches, and 5 black skirt tetras. I think the loach tries to get the tetras but they are to fast for him and the corys are easy prey. I was reading around and I think one of the problems could be I'm not feeding them enough, currently I feed everyone every other day with flake food and sometimes blood worms, should I feed more often. Also what other options do I have to stop the big loach from murdering?