Hey, I have a 20 gallon and I am planing to stock it with 12 rummy nose tetras. I am either going to put Betta, Apistogramma agazzi fire red, Bolivian ram, German blue ram, golden ram but I just could not find out which one to pick! I was just going to pick what looks best at my LFS. So reply back to help me pick out what to buy for my centerpiece fish.