Prism Blue Desktop Aquarium. The Penn-Plax Prism Desktop Aquarium fits perfectly on your desk, dresser or any other small space. The nano fish tank offers a modern cube design for a striking look, and it comes ready to use with an LED light and filter. Thanks to a Quiet Power Integrated Filtration system, the small fish tank stays clean with little noise. A bright LED light provides a clear view inside the desk fish tank. Blue model includes LED light and filter, so you can get started right away Quiet Power Integrated Filtration system keeps your nano fish tank clean and healthy 18 bulb LED light shines brightly through the plastic lid to illuminate aquarium Small fish tank has a modern, cube design with a black background and plastic lid This 2-gallon aquarium fits perfectly on any desk, dresser, or small space Tank Capacity 2 gal. Tank Material Glass