hey everyone! I have 5 neon tetras right now and I have just moved some of my fish to open up room for a few more in my 20 gallon. I have thought of a few options on what I want to do. I thought maybe I could get a few cardinal tetras like 3 maybe 4 at tops. Do you think they would school with my neon tetras??? I don't really ant to get the full 5 or 6 of them id prefer 3 and if they won't school to be happy I would rather go with something else to contrast the neon tetras. I was thinking maybe more harlequins with the cardinals an that would op the tank off or I could get harlequins and cories or just some pristellas let me no your opinions please!!! thanks for the help!!!