Beardfish [Polymixia]

Description

Polymixia is the sole genus in the family Polymixiidae, commonly known as beardfishes. These deep-sea fishes are characterized by their elongated bodies, a single long dorsal fin, and a chin barbel that gives them their common name. They possess a unique combination of primitive and advanced features, including a well-developed swim bladder for buoyancy control, and scales that are small and cycloid. Beardfishes are found in tropical and subtropical waters around the world, usually at depths ranging from 180 to 900 meters. They feed on small invertebrates and are known for their shiny, silvery appearance. This genus encompasses several species, each with its own distinct range and habitat preferences within the broader marine environments they inhabit.

Species

Taxonomy