Owstonia


Owstonia is a genus of marine ray-finned fish belonging to the family Cepolidae, the bandfishes. It is the only genus in the monotypic subfamily Owstoninae. They are found in deep waters of the Indian and Pacific Ocean.

Taxonomy

Owstonia was described in 1908 by the Japanese ichthyologist Shigeho Tanaka with the type species designated as Owstonia totomiensis due to it being the only species in a monotypic genus at the time of its description. In 1913 Tanaka, along with the American ichthyologists David Starr Jordan and John Otterbein Snyder, created the family Owstonidae for this genus. The family was merged with the Cepolidae as a subfamily in 1956 and is now regarded as a subfamily, Owstoninae, of the Cepolidae. The name of the genus, Owstonia. means "belonging to Owston". This name refers to a specimen of O. totomiensis being found in the collection of Alan Owston.

Species

There are currently 36 recognized species in this genus:Owstonia ainonaka Smith-Vaniz & G. D. Johnson, 2016Owstonia contodon Smith-Vaniz & G. D. Johnson, 2016Owstonia crassa Smith-Vaniz & G. D. Johnson, 2016Owstonia dispar Smith-Vaniz & G. D. Johnson, 2016Owstonia doryptera Owstonia elongata Smith-Vaniz & G. D. Johnson, 2016Owstonia fallax Smith-Vaniz & G. D. Johnson, 2016Owstonia geminata Smith-Vaniz & G. D. Johnson, 2016Owstonia grammodon Owstonia hastata Smith-Vaniz & G. D. Johnson, 2016Owstonia hawaiiensis Smith-Vaniz & G. D. Johnson, 2016Owstonia ignota Smith-Vaniz & G. D. Johnson, 2016Owstonia japonica Kamohara, 1935Owstonia kamoharai Endo, Y. C. Liao & Matsuura, 2015 Owstonia lepiota Smith-Vaniz & G. D. Johnson, 2016Owstonia maccullochi Whitley, 1934 Owstonia macrophthalma Owstonia melanoptera Smith-Vaniz & G. D. Johnson, 2016Owstonia merensis Smith-Vaniz & G. D. Johnson, 2016 Owstonia mundyi Smith-Vaniz & G. D. Johnson, 2016Owstonia nalani Smith-Vaniz & G. D. Johnson, 2016Owstonia nigromarginata Owstonia nudibucca Smith-Vaniz & G. D. Johnson, 2016Owstonia psilos Smith-Vaniz & G. D. Johnson, 2016Owstonia raredonae Smith-Vaniz & G. D. Johnson, 2016Owstonia rhamma Smith-Vaniz & G. D. Johnson, 2016Owstonia sarmiento Y. C. Liao, Reyes & K. T. Shao, 2009Owstonia scottensis Smith-Vaniz & G. D. Johnson, 2016Owstonia sibogae Owstonia similis Smith-Vaniz & G. D. Johnson, 2016Owstonia simotera Owstonia taeniosoma Owstonia tosaensis Kamohara, 1934Owstonia totomiensis S. Tanaka, 1908 Owstonia weberi
  • ''Owstonia whiteheadi''

Characteristics

Owstonia bandfishes differ from the two genera in the subfamily Cepolinae by being less elongate, having only 27-33 vertebrae and 19-26 soft rays in their dorsal fin. Their dorsal and anal fins not attached to the lanceoloate caudal fin. They vary in maximum total length from in O. nalani to in O. weberi.

Distribution and habitat

Owstonia bandfishes are found in the Indo-Pacific region from the eastern coast of Africa as far east as Hawaii. They are found in deep water. Unlike the Cepoline bandfishes the fishes in Owstonia are not, other than one species, burrowers in soft substrates. They are found over rocky substrates swimming close to the bottom particularly on the upper continental slope, around atolls or oceanic fragments of crust. The exception is O. taeniosoma which has a more elongated body than its congeners and is found over sand or mud bottoms on the continental shelf.