We have 1 blue gourami, 4 red minors, 3 penguin tetras, an albino cory and a bristlenose...and we are going to add some harlequin rasboras soon...oh and we have a 29 gallon for all of these little tykes....and everyone gets along just fine...the betta always goes after the blue but never the other way around..the gourami is afraid of the betta......