Hello my wife and myself just bought our first tank, and are very excited to learn about what we can do with it. It's going to be a freshwater 55gal tank. we bought alot of stuff(heaters, filters(undergravel and above), and misc. others) Now comes the fun part what all kind of fish to add. My wife already went out and bought a no-no, according to her the lady at the pet store said it was fine, three differnt kinds of goldfish(black moor, Ryu, and someother one), a Sucker not sure of which kind, and a BETA. I know these fish should not be puut together but so far they have been ok. Anyone have any help idea's?