I have a 30 gallon Eclipse tank with natural color gravel, two pieces of artificial Driftwood, one action air ornament, a bubble wall, and plastic plants. I was going to get about six Neon Tetras. (possibly more) I was wondering what other kinds of fish, and how many would make good tank makes? These are some of the fish I was looking at : Jellybean Tetra, Rainbow Shark, Red Tail Shark. Would these be suitable tank makes? What else would you recommend?