Use for LONG time: It can be used in the aquarium for a long time and the height can be adjusted freely. Harmless to Fish: Made of environmentally friendly silicone material, non-toxic, odorless and durable. Easy to set up: Suction cup fixing, it is fixed by a thin invisible line. Ideal decoration Imitation: Incredibly detailed, it floats freely and gracefully like a real jellyfish. Note: It needs to cooperate with aquarium light, the light effect only occurs under actinic lighting, blue or purple light is recommended. Product description Features Color: Pink, Green, Blue, Orange, Purple, Yellow Material: Silicone Size: About 18 * 5.5cm / 7.09 * 2.17inch (L * W) Format included 6 * Luminous Jellyfish