For a 10 gallon tank, the Aquarium Wiki suggests that you can have: 1 Male , 2 Female , 4 Male , 3 Could I hypothetically replace the Venezuelan pygmy corys with tail spots? I hear they're more mid-level fish; does it matter? Could I keep any kind of small cory? Am I likely to end up with sparkling gouramis young? I would like to avoid breeding, I don't have the resources, but I'd also like to avoid fighting. Would three females fight? And does this sound like a lot of fish to anyone? It certainly exceeds the 1 inch - per - gallon rule, which I know isn't hard and fast. I kept corys (my favorites; very silly active fish, at least the ones I had, though I hear they aren't supposed to be like that?) last summer with the guidance of a more experienced person; did all right for the summer but not as well as I wanted. This would be my first really solidly kept tank. I can't afford a bigger one but I'm home a lot and can keep a very close eye on it. Haven't chosen filters or plants yet, it's going to be dependent on the build needs. Thoughts? Thank you!