The Blue LEDs in this aquarium light enhance the fluorescent colors in GloFish. The effect is especially dramatic when viewed in a dark room. Blue LEDs enhance GloFish colors. This LED aquarium light is designed to convert existing aquariums to an eye-catching GloFish environment. It features blue LED lights that highlight the fluorescent colors of the fish. This Universal light has an adjustable clamp to fit most standard aquariums up to 15 gallons.