Long nostril jawfish (Opistognathus longinaris) is a ray-finned fish of the family Opistognathidae. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 4.1 cm. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
Dorsal spines (total): 10; Dorsal soft rays (total): 20; Anal spines: 3; Anal soft rays: 19; Vertebrae: 34. This species is characterized by the following set of characters: maxilla rigid without flexible lamina posteriorly; D X,20; tentacle on anterior nostril at least 4 times maximum diameter of posterior nostril; oral membrane between dentaries and ‘tongue’ dark brown .: elongated.
Behavioural data for Long nostril jawfish is currently being reviewed.
Marine; pelagic-neritic; depth range 65 - ? m . Tropical South Africa.
No observations yet - be the first to log one!
View all observations for Long nostril jawfish ↗Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.