Plesiops

Plesiops is a genus of fish in the family Plesiopidae, commonly known as prettyfins or roundheads. These fish are generally small in size, typically ranging from a few centimeters to around 20 centimeters in length. They are found primarily in the Indo-Pacific region, inhabiting coral reefs and rocky coastal areas.

Plesiops species are characterized by their elongated bodies, relatively large eyes, and a single dorsal fin that extends along most of their back. They often display vibrant coloration, featuring patterns of reds, blues, yellows, and blacks. This vibrant coloration serves as camouflage within the complex coral reef environment and may also play a role in intraspecific communication.

These fish are carnivorous, feeding on small invertebrates such as crustaceans and worms. They are typically found dwelling in caves and crevices within the reef structure, emerging to hunt for prey. Plesiops species are generally solitary or found in small groups.

Due to their attractive coloration and relatively small size, some Plesiops species are popular in the aquarium trade. However, they can be challenging to keep in captivity due to their specific dietary needs and requirements for suitable hiding places.

The classification of Plesiops within the Plesiopidae family and the relationships between individual species have been subject to ongoing taxonomic research. New species within the genus have been described in recent years, and further research may lead to revisions in the existing classification.