I have one 10 gallon tank with mollies (currently 2 females and 2 males and about 30 fry) and a 20 gallon tank with a blue gorami and a black and white angel. I just bought a 35 gallon bow front tank for my mollies, so once it arrives my mollies will have a new home and I'll have an empty tank ;D . I also have a 5 gallon bow front tank and a 10 gallon tank in my garage not being used, may set them up soon...