Backyard Aquaponics
A place to discuss aquaponics

If the fish are about the same size, I wouldn't worry too much. If some fish are bite sized to the other fish, then it might be a different story and you might want to make sure they don't get too hungry though most of those fish are probably not going to work too hard to eat other live fish so long as we are not talking about tilapia fry with the protein hunger or starved large catfish. (Catfish can be lazy and if they are well fed, they don't seem to put much effort into chasing small fast fish, or at least my channel catfish didn't do a good job of eating the small escaped tilapia fingerlings that were in their tank.)

My Aquaponic