I have a 12" (and growing really fast) Aba. Is there any small fish or invertabrates that I can safely put in his tank to help clean up his leftover food (tilapia, shrimp, worms etc)? He is very aggressive and will often kill any feeder rosies that he is too full to eat. I had thought about a Cory but I am afraid he will harass it to death. Any ideas. If not, it is no big deal. I clean out food debris as I see them.

