This will be my 3rd tank and I'd like to do it a little different and have fish that are more colorful. My other 2 tanks have driftwood/plants with one tank having Tiger Barbs and the other Mollies. I used to have 2 Koi Angel fish that were nice looking but felt that 29 gallons wasn't enough room. I plan to use sand as a substrate for the new 55. Any suggestions on colorful fish that are suitable for a 55g would be appreciated. Attached is an older pic of my other 2 tanks. Just want a different look this time around. I know this may sound silly being that it's a freshwater tank but I'd like for it to have a saltwater vibe if that makes sense? Thanks in advance for any suggestions.