I have an important question, I have a 16 inch redtail catfish and I'm considering putting 2 PB in with him since he is the only one in the tank besides a Pleco. I've tried putting koi in the tank with him (3) and he went crazy, he was very restless and splashing water everywhere. The koi wouldn't leave him alone. I took them out and he was fine right away, my question is, I've heard PB can be very aggressive and territorial, I believe these two PB im looking at are 6-8". Maybe a little more. The question is will they bother him? Will they try to fight? What is the correct temps, diet, and all around proper care for PB? How is their temperament as I've read it can be fairly bad? Thank you!!