YIXUAN Harmless to Your FishArtificial jellyfish is made of non-toxic and harmless high-quality silicone material, which is harmless to all fishes, can be sinked in water for a very long time and the color shall not fade. Easy to UseArtificial jellyfish is easy to use, just fix suction cup, it attaches by thin invisible string and the height can be adjusted freely; Please note the suction cup should be on the bottom or side of the fish tank and the string together with the jellyfish should be lower than the waterline. Realistic Movement and AppearanceJellyfish will float up and down with the current if the fish tank has water pump, like natural floating jellyfish; Artificial jellyfish, no cleaning or feeding required, saves your time and energy, adds a distinctive creative look to your fish tank or aquarium. Value PackageHere are 6 simulated jellyfish in the package, size: 5.5 * 15cm the colors are yellow, green, orange, pink, purple, blue, which makes your fish tank more special and colourful. NoteThe glowing effect of colorful only work under actinic lighting, work well under blue or purple light, does not job in darkness, just floating freely. Quantity delivered: 6 pieces