Halfnaked Jawfish, Opistognathus seminudus Smith-Vaniz 2004

A Halfnaked Jawfish, Opistognathus seminudus, from the Great Barrier Reef, Queensland, Australia. Source: Fenton Walsh / FishBase. License: All rights reserved

A relatively small pale jawfish with a brown mottled pattern and a black ocellus on the spinous dorsal fin.

Cite this page as:
Dianne J. Bray, Opistognathus seminudus in Fishes of Australia, accessed 30 Nov 2023, https://fishesofaustralia.net.au/Home/species/3495

Halfnaked Jawfish, Opistognathus seminudus Smith-Vaniz 2004

More Info


Endemic to the Great Barrier Reef, from Lizard Island to One Tree Island, Queensland. 


Head and body pale with irregular, brown wavy lines or oblong spots along the sides, a black ocellus on the anterior part of the dorsal fin, and a fins brown basal stripe on the dorsal and anal fins.


The specific name seminudus is from the Latin semi meaning 'half' and nudus meaning'bare' or 'naked' in reference to the naked anterior half of the body.


Dianne J. Bray

Quick Facts

CAAB Code:37388014

Depth:0.5–22 m

Habitat:Reef associated, in burrows

Max Size:9 cm SL

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