LESYPET Artificial Jellyfish & Coral Ornament for Aquarium Fish Tank Harmless to all fish, Fits Salt water and Fresh water Ideal decoration for the fish tank or aquarium Fits Salt water and Fresh water 3"x3"x1.4" Because the plastic material, there will be plastic smell. Before use, into the water soak two days, the smell will fade. After a period of time the smell will disappear