My tank size is 26 gallons. Honestly some of the fish I do not remember the names of them, but here is what I do have; Datnoid (2.5in), Catfish (4.in), Blue Graumi (spelling may be wrong)(1in), larger Graumi (2in), 3 gold tetras (1in), 3 red fish about the same size as the tetras (1in)...