The Natureform Coral Mini Tube Sponge Yellow/Purple, modeled after Theonella sp, is an artificial coral designed to replicate the unique form and dual-colour pattern of natural tube sponges. With its compact size of 18 x 14 x 5 cm, this piece is ideal for adding a pop of colour and structural interest to smaller aquarium spaces. The blend of bright yellow and purple hues not only captivates the eye but also provides a visually stimulating environment for tank inhabitants, without the maintenance required for real corals.