''Ostorhinchus brevispinis'' is a species of deep-water cardinalfish. To date it has only been recorded from

Rurutu Rūrutu is the northernmost island in the Austral archipelago of French Polynesia, and the name of a commune consisting solely of that island. It is situated south of Tahiti. Its land area is .Austral Islands The Austral Islands (french: Îles Australes, officially ''Archipel des Australes;'' ty, Tuha'a Pae) are the southernmost group of islands in French Polynesia, an overseas country of the French Republic in the South Pacific. Geographically, ...

and

Rangiroa Rangiroa ( Tuamotuan for 'vast sky') or Te Kokōta (Cook Islands Māori for 'the Hyades star cluster') is the largest atoll in the Tuamotus and one of the largest in the world (smaller than Kwajalein in the Marshall Islands and Huvadhu in the M ...

in the Tuamotus although the difficulty in observing and collecting this fish has led the authors who described the species to predict that it is likely to have a far wider distribution. This species grows to over 60 mm in length with five broad longitudinal brown stripes alternating with five much narrower whitish stripes and a dark mark on the caudal peduncle. The scientific name "''brevispinis''" refers to the very short first spine on the

dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through conv ...

References

brevispinis Fish described in 2003 Taxa named by Thomas H. Fraser Taxa named by John Ernest Randall {{Kurtiformes-stub