I'm getting ready to switch from plastic plants to live and don't know how many fish I can safely keep in my tank. I know a lot of people don't agree with the one inch per gallon rule so I thought I'd ask for some help. I currently have 4 eleganz cory cats in my tank, and I would like to get some dwarf gourami's and tetras (lemon, blue, flame). I had 2 dwarf gourami's and the one terrorized the other, so how many is enough to keep the peace? I know it depends on the individual fish's temperament, but would it be better to get three than two? If so, how many tetras could I safely keep with 4 eleganz cory cats and 3 dwarf gouramis??? Ideally I would love to have all three kinds, but I know they are schooling fish so I want at least 6 of each. I do a 1/4 water change once a week and I've never had any problems with my tank. Also, the tank would be filled with dwarf hairgrass, dwarf anubias and ambulia, as well as rocks and driftwood. Any suggestions???