i just want them to eat things i put in there haha for entertainment and saftey reasons i mainly feed mine krill with the ocasional feeders i try to get more healthy feeders platys when there accesible and rosy reds (never gold fish) i still just dont feel comfortable with the feeder swimming around in there tank for a day or 2 id like them to just eat it. and u might suggest cichlids but i really apreciate other things about piranhas so i really prefer them i love the sparkle they get as they reach adult hood and the blood red bellies. mine right now have a considerable amount of room and are in a low traffic area of my house but theyre not very agressive at all infact theres been a zebra danio in there with them (one of the ones i cycled the tank with originally) hes survived like over aweek with 6 piranhas in a 55 that ive been feeding moderatley but not like soo much lol im about to start a community RB tank haha. Do you suggest waiting till they reach adult hood and see what happens? and what about wild caught reds? big difference?