Clear, plastic tank provides a beautiful view of your underwater environment and is virtually unbreakable. Air powered Whisper® three-stage filtration with small Bio-Bag® cartridges keep your aquarium crystal clear and odor-free. Low voltage LED lighting insures a bright aquarium and enhances safety. 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.)