Okay, for starters let me fill ya in on the general details of my tank (if this even matters). My tank will be here tomorrow or Friday. It is a 100 gallon custom built tank. The demos dimensions are 39x20x27. I will have a sand bottom and live plants. Here comes my question. I already have a general idea of what bottom fish I want. I'm just curious about what fish I can get that swim at medium and high levels. Preferably peaceful fish because this is a community tank. Please, help a brotha out! This is also a tropical freshwater tank as well! Any advice is welcomed! Also, how can I keep these high level swimmers happy?Thank you for the help!