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Ruvettus pretiosus Cocco, 1833
OILFISH
Castor Oil Fish; Escolar; Oil-fish; Ruvettus tydemani Weber, 1913; Oilfish -

Life   Vertebrata   Fish   Gempylidae   Ruvettus

Ruvettus pretiosus
www.fao.org Copyright Michel Lamboeuf · 0
Ruvettus pretiosus

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Ruvettus pretiosus
© Copyright John Rangall, 2006 · 0
Ruvettus pretiosus
español

Overview
Main identification features
  • elongate, compressed; large eye
  • black
  • dorsal fin and a: 2 finlets behind;1ll
  • belly - keel of rigid scales
  • small spines between smooth scales
Oilfish

Elongate, slightly compressed; head pointed; eye large, circular; mouth at front, large, ends behind eye; 1 row large teeth each jaw, canines at front; belly with keel of bony plates along midline; 1st dorsal low, long, XIII-XV spines; 2nd dorsal higher 15-18 rays, 2 finlets behind; anal 15-18 rays, 2 finlets behind; tail broadly forked, no keels on tail base; pelvics well developed, under pectorals; scales smooth, with rows of small spines in between them; lateral line with slight curve over pectoral, straight to tail base.

Uniform dark purplish brown to brown; tips of pectoral and pelvic black; juvenile with margins of 2nd dorsal and anal white.

Size: 305 cm.

Habitat: Oceanic; midwater pelagic.

Depth: 50-1160 m.

Circumglobal, temperate to tropical, California to outer Baja, Guatemala to Panama, Ecuador to Peru, Malpelo.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ).
Depth Range Max: 1160 m.
Depth Range Min: 50 m.
Diet: bony fishes; Pelagic crustacea; octopus/squid/cuttlefish.
Eastern Pacific Range: Northern limit=34; Southern limit=-6; Western limit=-118; Eastern limit=-78; Latitudinal range=40; Longitudinal range=40.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Bentho-Pelagic.
Global Endemism: Circumtropical ( Indian + Pacific + Atlantic Oceans); East Pacific + Atlantic (East +/or West); East Pacific + all Atlantic (East+West); TEP non-endemic; All species.
Habitat: Water column.
Inshore Offshore: Offshore; Offshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 305 cm.
Regional Endemism: Island (s); Continent; Continent + Island (s); Tropical Eastern Pacific (TEP) non-endemic; Eastern Pacific non-endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Mid Water; Near Surface; Surface; Water column only;


Names
Scientific source:

Links to other sites

References
  • Briggs, J.C., 1960., Fishes of worldwide (circumtropical) distribution., Copeia, 1960:171-180.
  • Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • Cocco,., 1833., Cenni sul genere Ruvettus e sui caratteri che lo distinguone., Osservationes Peloritani, 8:18.
  • Eschmeyer , W. N. , Herald , E. S. and Hamman, H., 1983., A field guide to Pacific coast fishes of North America from the Gulf of Alaska to Baja California. Peterson Field Guide Ser. 28., Houghton Mifflin:336pp.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
  • Jimenez-Prado, P., Béarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.
  • Lopez , M. I. and Bussing, W. A., 1982., Lista provisional de los peces marinos de la Costa Rica., Revista de Biologia Tropical, 30(1):5-26.
  • Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp.
  • Rubio, E.A., 1988., Estudio taxonomico de la ictiofauna acompañante del camaron en areas costeras del Pacifico de Colombia., Memorias del VI Seminario Nacional de las Ciencias del Mar. Comisión Colombiana de Oceanografía. Bogota, Colombia., :169-183.
  • Van der Heiden , A. M. and Findley, L. T., 1988., Lista de los peces marinos del sur de Sinaloa, México., Anales del Centro de Ciencias del Mar y Limnologia de la Universidad Autonoma Nacional de Mexico, 15:209-224.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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