I am interested in keeping a SOLO Red bellied piranha. I have read that some people have success in keeping them solo. I know there are piranha species that are better in solitary but I really want a RBP because its the piranha that people think of. I plan to keep a fry in a 20 gal and move it to a bigger one when it grows. I am asking for advice if a solo RBP is capable of thriving and what setup(water conditions,filtration,how much flow, anything at all) and strategies I need in keeping one. As much as I want to keep 6+ of them I don't think I am able to care for a school of them since tbh I don't have much experience in this hobby and I would rather focus on a single individual getting the best care and attention it needs. TIA.
(Also what Hikari food do they eat(only brand here I can get))
(Also what Hikari food do they eat(only brand here I can get))