Koller Products 1-Gallon BettaTank trendy decorative aquarium is an ideal habitat for your favorite betta. Seamless, impact-resistant plastic tank with dazzling LED lighting provides a beautiful aquarium, suitable for home, dorm, or office. Uses 2 AA batteries (not included), optional Koller Products 5V Power Adapter (AQ51000) enables LED light to be plugged into electrical power outlet, available on Amazon. Decor and gravel not included. Dimensions: 15 L x 3.75 W x 8.5 H Inches.