i just brought a 12 inch pleco that i was hoping to keep with my 7 inch piranha. i took the piranha out and then placed both of them into the 75g tank. after a few minutes, my piranha seems to chase my pleco kinda like how he does with feeders. it was also trying to bite the pleco. i took the pleco out right now but i want to put it back in the piranha tank again later. is there any way to make this work?? should i just leave the pleco in there to fend for itself?? 






