Provides an excellent place for fish which adds extra fun to play. They are absolutely safe for fish, they 't rot or cause any algae problems. Unique bridge design, a good decor for the fish tank. They are in salt and fresh water. Colour:As Shown Material:Resin Size:13x4x6CM Package Contents: 1 * Simulation Aquarium Water Bridge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.