Opistognathus

Lore & Background

The genus Opistognathus was first described in the scientific literature with species such as Opistognathus cuvierii (1836) and Opistognathus nigromarginatus (1830). Many species have been described more recently, with a significant number authored by Smith-Vaniz between 1997 and 2018. The genus includes a wide variety of jawfishes, many with common names reflecting their appearance or location, such as the Yellow-head jawfish, African jawfish, and Leopard jawfish. Species are distributed across the Atlantic, Indian, and Pacific Oceans, with some named after specific reefs or regions like Elizabeth Reef, Galapagos, and Hong Kong.

Reader's Guide

The genus Opistognathus is notable for its large number of recognized species—72 as of the source article. The species list includes many described in the 21st century, indicating ongoing taxonomic work, particularly by Smith-Vaniz. The genus is distributed across all three major tropical oceans, suggesting a wide ecological range. The common names often highlight distinctive features (e.g., Yellow-head, White-tail, Blue-blotch) or geographic origins (e.g., Darwin, Mexican, Papuan). The article provides a comprehensive species list but no further details on behavior, morphology, or conservation status. The genus remains a subject of active ichthyological research, with new species continuing to be described as recently as 2024.

Did You Know?

• Opistognathus is a genus in the family Opistognathidae.
• There are 72 recognized species in the genus.
• Species include the Yellow-head jawfish and the Leopard jawfish.