Cosmic Desktop Aquarium Watch Bettas or Goldfish live among the stars and planets. Retro space styling features domed space city, 3-D planets and rocket bursting out the aquarium. Fun U.F.O. aquarium cap beams alien light into the tank. Compact (3/4 gallon) size is perfect for desktops. Ages 6 and up Adult assistance recommended Features: • 3/4 gallon aquarium • UFO cap with alien light beam • Glow-in-the-dark planets and stars • Toy telescope • Translucent green space rocks • Domed Space City Batteries are included.