what is the most aggressive fish that could stay in a 20 gallon (L or H) for a while. he could be transferred out eventually, but he couldn't get TOO big, or expensive. any suggestions?
Awesome fish. They're really pretty and green. The fins get all nice and red, and they also eat like pigs" miniature piranha's" Ive fed them live worms, meal worms, wax worms, and crickets. They are fun to watch cause they swim constantly. But beware cause if you have any other fish in there besides them they will gang up on them even if they are bigger. They'll harass him or kill. Can't put anyone shiny either unless you want it to die. They were fun fishes to have but I do miss mine. I had about 12 in a 29g. Good luck on your selection.