This clear plastic hexagon shaped aquarium is great for Bettas, and with the addition of a heater, small tropical fish. The kit includes a clear plastic canopy with convenient feeding hole, an auto-changing LED bubbling disk, air driven Whisper® internal filter, small Whisper® Bio-Bag®, and an air pump to drive both the airstone and filter. This aquarium is appropriate for keeping one Betta or up to two community tropical fish (We don’t recommend goldfish in any kit smaller than three gallons due to waste levels.)