INCLUDES ALL THE ESSENTIALS: This 3-gallon kit includes a seamless, crescent-shaped tank and energy-efficient blue LED lighting. BLUE LED LIGHTS: Hidden blue LED lights are incorporated into the hood, giving your GloFish fluorescent fish an exciting and uniquely fluorescent look. INTERNAL FILTRATION: The filter pulls water from the aquarium and pushes it through the filter cartridge, where the dense, dual-sided mesh catches debris and waste. INCLUDES HOOD: Sleek black hood reduces evaporation and helps keep fish from jumping. EXPERIENCE THE GLO®: GloFish fluorescent fish and products create a complete underwater fluorescent experience.