The GloFish Submarine Aquarium Ornament is ideally suited to enhance your GloFish tank! This unique, durable decoration not only provides your GloFish with a perfect place to hide (helping to reduce stress) and room to explore, but it also features a special silvery finish that reflects GloFish LED lights. It's so groovy you might even start singing about it! "We all live in a green submarine, green submarine, green submarine..." No, that's not quite right. But there's something there.