Hi! I am new to this, and would like a little input from some experienced people. We have a 29 gallon cold water tank that we have some minnows, misquitofish, and danios in, but I just bought a 55 gallon and am setting up a tropical tank. I know we want a couple angelfish, so that is going in for sure. From what I understand, they like having some plants around, are there any you would suggest for a beginner? Also, would my danios be happier if I moved them from the cold water tank to the tropical tank? Their temperature range covers both, but I am not sure which is ideal for them. I also want some rainbowfish. So, what I am considering is: 2 angelfish, 5 rainbowfish, and maybe 6 danios depending on if they would be happier in the warmer tank. Also, any suggestions on a bottom feeder? I have gravel substrate that I put in before I realized that catfish prefer sand.