Red Pin Cushion Urchin

Red Pin Cushion Urchin or Salmacis bicolor are interesting and very useful animals for the marine aquarium. It is an algae eater and is therefore often used for algae infestations. This sea urchin grows to about 8 - 9 cm, ... Salmacis bicolor are interesting and very useful animals for the marine aquarium. It is an algae eater and is therefore often used for algae infestations. This sea urchin grows to about 8 - 9 cm, and mainly moves over the rocks. Salmacis bicolor is a rather rare, beautiful, colorful sea urchin. Characteristics Eat algae from stones and windows Must be added Peaceful Can knock over corals Grows to about 8 - 9 cm