I have a 20 high. The current stock is 3 balloon mollies (1 male, 2 female) 3 platies (1 male, 2 female) 3 bleeding heart tetras (sex unknown) and 1 common pleco. I KNOW my tank is overstocked. My goal is to reduce the number of fish in my tank. I just dont know which ones to take back to the LFS. I'm thinking maybe the mollies and playties, and instead getting 3-4 more tetras. That would make it 6-7 bleeding heart tetras and 1 common pleco. Or, take back the tetras and just keep everything else. I dont know which i should do. Thanks in advance!