Led decorative jellyfish aquarium fill the aquarium with water and watch the jellyfish dance when you put it in. the led light changes color, providing both a dim light and a beautiful ambiance. it runs on battery and usb. ------- led decorative jellyfish aquarium you can watch the jellyfish dance when you fill the aquarium with water and put it in. the led light changes color, providing both a dim light and a beautiful ambiance. it runs on battery and usb. more than 10 stocks are offered to be sold at the campaign price. Create a party-ready atmosphere with this colorful LED lighting. Easy to install and perfect for events or home decoration.