Let,s see... I have 2 red wag plattys, 3 long fin danios, 2 glass tetras, 2 bleeding heart tetras, 2 long fin black skirt tetras, 1 silver tipped shark, 1 bala shark, 2 opalione gruoamis(sp), 3 cherry barbs, 2 red dwarf gruoamis. that's 20 in my 54 g. In my new 36g bow front I have 3 female fancy guppies, 2 male fancy guppies, 2 gruamis(can't remember what kind) 1 sunset platty, 1 upside down catfish, and of course with the guppies one of the females just had babies(who knows how many of those if they have not been eaten yet). only 9. I also have 5 male bettas and a cory in each tank with them. they seem to be good companions. That makes a total of 39 fish for NOW as I am just getting started.