Common name: Unicornfish

Rhinesomus, commonly known as Unicornfish, is a genus of surgeonfish characterized by their distinctive horn-like protrusion on the forehead, which is more prominent in some species than others. These herbivorous fish are found in tropical and subtropical oceans and are known for their grazing habits on algae. They play a vital role in maintaining the health of coral reefs by controlling algae growth. In the aquarium, they require large tanks with plenty of swimming space and a diet rich in marine algae and vegetable matter.