You should just try and grow out a solo piraya...maybe he'll get as big as big frank one day who knows Frankenstein being a 22+" piraya...belongs to als from pfury.
I have 3 9" rbp and they are wimps. The only way I can get them to eat in front of me is to injure their food(usually sunfish, or bluegill) I've had a 8" pike in with them he has had his tail nipped a time or two but he fights back. So they leave him alone.
wish ida had a copy of that when i worked at lfs so I could have a lil black and white proof when I got told "my fish is killas" meh it was just as satisfying to feed their "killas" to my catfish
Yeah, the common person who doesn't know anything about fish keeping thinks of piranhas as monsters. I mean, they are very vicious and deadly in schools, but when alone, they remind me of their more timid cousins.