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Tetrapturus angustirostris Tanaka, 1915
SHORTBILL SPEARFISH
Hatchet Marlin; Pacific Shortbilled Spearfish; Short-billed Spearfish; Shortnose Spearfish; Tetrapturus audax Philippi, 1887

Life   Vertebrata   Fish   Istiophoridae   Tetrapturus

Tetrapturus angustirostris
© Copyright IATTC 1999, 2006 · -3
Tetrapturus angustirostris

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Overview
Main identification features
  • body very elongate; short spear
  • dorsal fin height = body height
  • pectoral short
Body very elongate; bill very short, usually less than 15% of total length; high front dorsal rays form triangular peak, most of remaining part of fin relatively high; height of anterior lobe of first dorsal fin exceeding greatest body depth; first dorsal fin rays 45-50; second dorsal fin rays 6-7; first anal fin rays 12-15; second anal fin rays 6-8; pectoral rays 17-19, fin short; pelvic fins slender, filamentous, about twice the length of the pectorals.

Dark blue dorsally, blue blotched with brown laterally, and silvery white ventrally, without dots or bars; first dorsal fin dark blue; remaining fins dark brown.

Size: to 240 cm; and at least 33.8 kg..

Habitat: oceanic, pelagic.

Depth: 0-1830 m.

Tropical and temperate Indo-Pacific, entering eastern Atlantic (via Cape of Good Hope) but not spawning there. California to the mouth of the Gulf of California to Peru and the oceanic islands.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ); North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 1830 m.
Depth Range Min: 0 m.
Diet: bony fishes; octopus/squid/cuttlefish; Pelagic crustacea.
Eastern Pacific Range: Northern limit=50; Southern limit=-30; Western limit=-126; Eastern limit=-71; Latitudinal range=80; Longitudinal range=55.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Pelagic.
Global Endemism: All Pacific (West + Central + East); Indo-Pacific only (Indian + Pacific Oceans); TEP non-endemic; "Transpacific" (East + Central &/or West Pacific); All species.
Habitat: Water column.
Inshore Offshore: Offshore; Offshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 240 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.
  • Castro-Aguirre, J.L. and Balart, E.F., 2002., La ictiofauna de las islas Revillagigedos y sus relaciones zoogeograficas, con comentarios acerca de su origen y evolucion. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:153-170.
  • 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.
  • Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo .  Derechos reservados de los autores y Conservación Internacional.
  • Grove , J.S. and Lavenberg, R. J., 1997., The fishes of the Galápagos islands., Stanford University Press:863 pp.
  • Jimenez-Prado, P., Béarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.
  • Joseph , J. , Klawe , W. and Murphy, P., 1988., Tuna and Billfish - fish without a country., Inter-American Tropical Tuna Commission:69.
  • 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.
  • Nakamura,., 1985., Billfishes of the world. An annotated and illustrated catalogue of marlins, sailfishes, spearfishes and swordfishes known to date. FAO species catalogue Vol. 5., FAO Fish. Synop. No 125, 125.
  • Tanaka, S., 1915., Figures and descriptions of the fishes of Japan including Riukiu Islands, Bonin Islands, Formosa, Kurile Islands, Korea and southern Sakhalin., Fig. Descr. Fish. Japan, 19:319-342.
  • 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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