I have a 3 year old opaline gourami in a 29 gallon tank. There is only 4 zebra danios left and two snails with him. I need to redo the tank. What should i add? There use to be neons, rasboras, and lamp eyes. What should I stock it with now? I want interesting fish but easy to care for. Also my gourami is a cranky pants. No corys he killed the last ones and no pleco. He wasn't to nice to mollies either. Help?