I have had a male and female apistogramma and they were a pretty hardy fish. They like to have a cave to go to. Mine laid eggs, and the fish carry the brood in their mouth. They are a very nice fish to add to your tank.
I was watching Cory on You Tube about making a simple aquarium with just Neon Tetras, but I can not remember how many Neons he said you could put in a 10 Gallon tank, with plants. I was wondering if anyone could help me with this.