Help with tank redesign?
I have a ten gallon rectangular tank well planted with a sponge filter and a carbon filter. with two female and one male molly, and two blind cave tetras. I want a bottom feeder that will eat leftovers (probably ghost shrimp), fancy guppies, and a somewhat larger fish that will eat the guppy and molly fry with out harming the adult fish. What is the best combination of quantity and species in order to keep my tank at its cleanest and happiest environment?