Owstonia
| Owstonia | ||||||||||||
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Owstonia kamoharai |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Owstonia | ||||||||||||
| Tanaka , 1908 |
Owstonia is a diverse genus of bandfish (Cepolidae). The fish live on hard floors in the Indo-Pacific from the east coast of Africa to Australia, as well as Japan in the north and New Caledonia in the east at depths of 155 to 550 meters. The genus was named after Alan Owston (1853-1915), an amateur naturalist who mainly studied Asian animals.
features
Like all ribbon fish, Owstonia species are elongated and laterally flattened. When fully grown , they reach standard lengths of 7 ( O. sarmiento ) to 40.8 cm ( O. kamoharai ). They differ from the three other species of ribbon fish (subfamily Cepolinae) mainly in that the dorsal, anal and caudal fins have not grown together. The caudal fin is not bifurcated with elongated central fin rays in most species. The rays of the dorsal and anal fin are thin and flexible. Owstonia species have round scales. The dorsal and anal fins are not scaly. In most species, the "cheeks" are also scaly. The number of gill pelvis rays is 30 to 60 in adult fish, the number of Branchiostegal rays is six. The lower edge of the preoperculum can be smooth or slightly serrated, but it can also have strong spines. The mouth is large, terminal and sloping upwards. The premaxillary is darkly pigmented in most species (not in O. hawaiiensis, O. ignota and in most specimens of O. psilos ). The palate is toothless. The swim bladder is well developed.
- Fins formula : Dorsal III-IV / 19-26, anal I-II / 11-19, pectoral 17-23, ventral I / 5, caudal 17.
- Scale formula : mLR 27-108.
- Vertebra : 27-33.
For comparison, the fin formula and vortex number of the other ribbon fish:
species
There are 35 types:
- Owstonia ainonaka Smith-Vaniz & Johnson , 2016
- Owstonia contodon Smith-Vaniz & Johnson , 2016
- Owstonia crassa Smith-Vaniz & Johnson , 2016
- Owstonia dispar Smith-Vaniz & Johnson , 2016
- Owstonia dorypterus ( Fowler , 1934)
- Owstonia elongata Smith-Vaniz & Johnson , 2016
- Owstonia fallax Smith-Vaniz & Johnson , 2016
- Owstonia geminata Smith-Vaniz & Johnson , 2016
- Owstonia grammodon ( Fowler , 1934)
- Owstonia hastata Smith-Vaniz & Johnson , 2016
- Owstonia hawaiiensis Smith-Vaniz & Johnson , 2016
- Owstonia ignota Smith-Vaniz & Johnson , 2016
- Owstonia kamoharai Endo , Liao & Matsuura , 2015
- Owstonia lepiota Smith-Vaniz & Johnson , 2016
- Owstonia maccullochi Whitley , 1934
- Owstonia macrophthalmus ( Fourmanoir , 1985)
- Owstonia melanoptera Smith-Vaniz & Johnson , 2016
- Owstonia merensis Smith-Vaniz & Johnson , 2016
- Owstonia mundyi Smith-Vaniz & Johnson , 2016
- Owstonia nalani Smith-Vaniz & Johnson , 2016
- Owstonia nigromarginatus ( Fourmanoir , 1985)
- Owstonia nudibucca Smith-Vaniz & Johnson , 2016
- Owstonia pectinifer ( Myers , 1939)
- Owstonia psilos Smith-Vaniz & Johnson , 2016
- Owstonia raredonae Smith-Vaniz & Johnson , 2016
- Owstonia rhamma Smith-Vaniz & Johnson , 2016
- Owstonia sarmiento Liao , Reyes & Shao , 2009
- Owstonia scottensis Smith-Vaniz & Johnson , 2016
- Owstonia sibogae ( Weber , 1913)
- Owstonia similis Smith-Vaniz & Johnson , 2016
- Owstonia simoterus ( Smith , 1968)
- Owstonia taeniosoma ( Kamohara , 1935)
- Owstonia tosaensis Kamohara , 1934
- Owstonia totomiensis Tanaka , 1908
- Owstonia weberi ( Gilchrist , 1922)
There are also four other previously undescribed species.
Individual evidence
- ↑ a b c Smith-Vaniz, WF & Johnson, GD (2016): Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae) . Zootaxa , 4187 (1): 1-103. doi: 10.11646 / zootaxa.4187.1.1