Saim&reg; Aquarium Fish Tank Artificial Fish Ornament Decoration This fish is connected by a thin line with a suction cup at the end of line.Set this sucker at the bottom or side of fish tank and adjust the line's length. Environment friendly made material, no harm to aquarium creature, a great place for nitrobacteria. Use surfing pump to get more lively effect. Ideal decoration for the fish tank or aquarium It's recommended to install LED aquarium light to reach the best view effect.