I was recently given a 25g cube type glass aquarium and I would like some stocking ideas. My boyfriend finds freshwater fish to be very dull and so I would like to find something that is going to be colorful and flashy. I was thinking maybe peacock gudgeon and something else. Anyone have any ideas? I want something that isn't going to be difficult to maintain and also will live awhile. I really thought about some rainbowfish or Killifish but they just don't sound like they live very long.