Hi! I have a pretty new 29 gallon tropical community tank that currently has 3 black neon tetras, 3 australian rainbow fish, and one flame dwarf gourami. Everyone seems happy and is getting along well, and the water was just tested today and came back perfect. I would like some corys and maybe some rasboras, but I'm really worried about overcrowding. So I guess the short version of my question is this: How much is too much in a 29 gallon tank?