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Higher taxa:  Life   Vertebrata   Fish   Scombridae   Thunnus   Global map IDnature guides: Fish, Fish_species_NCSM, SFTEP We parsed the following live from the Web into this page. Such content is managed by its original site and not cached on Discover Life. Please send feedback and corrections directly to the source. See original regarding copyrights and terms of use. Taiwan Biodiversity National Information Network FishBase

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© Copyright Clay Bryce, 2006 Thunnus albacares	© Copyright John Rangall, 2006 Thunnus albacares
© Copyright Photographer/SFTEP, 2002 Thunnus albacares

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Overview

Main identification features dorsal fin and a: very long lobes pectoral: long (but not passing 2nd dorsal fin ), tip straight white bars - solid + spotted, on belly and rear body Dorsal fins close together, the first with prolonged spines anteriorly, giving a strongly concave outline; first dorsal with XIII or XIV spines; second dorsal and anal fins becoming extremely tall in large specimens, well over 20 percent of fork length; 7-10 finlets behind second dorsal and anal fins; pectoral fins moderately long, in small fish tip is wide and rounded, in fish to 110cm fin does not reach past middle of D2 base; body with very small scales; anterior corselet of larger scales present, but not very distinct. Back metallic dark blue, becoming yellow to silver on sides and belly; in fish up to 110cm belly and rear body with narrow vertical white bars, alternate bars are solid and spotted; dorsal and anal fins, including finlets, bright yellow, the finlets with a narrow black border. Size: reaches 220 cm; all- tackle world record 176.4 Kg. Habitat: oceanic pelagic. Depth: 0-464 m. Worldwide in tropical and subtropical seas; southern California to the SW and central eastern parts of the Gulf of California to Peru and the oceanic islands. Attributes Abundance: Common. Cites: Not listed. Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ). Depth Range Max: 464 m. Depth Range Min: 0 m. Diet: Pelagic crustacea; octopus/squid/cuttlefish; bony fishes. Eastern Pacific Range: Northern limit=33; Southern limit=-20; Western limit=-118; Eastern limit=-70; Latitudinal range=53; Longitudinal range=48. Egg Type: Pelagic; Pelagic larva. Feeding Group: Carnivore. FishBase Habitat: Pelagic. Global Endemism: Circumtropical ( Indian + Pacific + Atlantic Oceans); East Pacific + Atlantic (East +/or West); Transisthmian (East Pacific + Atlantic of Central America); East Pacific + all Atlantic (East+West); All Pacific (West + Central + East); TEP non-endemic; "Transpacific" (East + Central &/or West Pacific); All species. Habitat: Flotsam; Water column. Inshore Offshore: Offshore; Offshore Only. IUCN Red List: Not evaluated / Listed. Length Max: 220 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:       Integrated Taxonomic Information System

Links to other sites

Fishbase Catalog of Fishes Integrated Taxonomic Information System

References

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Contrib., 4:10pp. Robertson , D.R. and Allen, G.A., 1996., Zoogeography of the shorefish fauna of Clipperton Atoll., Coral Reefs, 15:121-131. Rubio, E.A., 1986., Notas sobre la ictiofauna de la Isla de Gorgona, Colombia., Boletin Ecotropica. Univ. Bog. Jorge Tadeo Lozano, 13:86-112. Schaefer, K. M., 1999., Comparative study of some morphological features of yellowfin (Thunnus albacares) and bigeye (Thunnus obesus) tunas., Inter-American Tropical Tuna Commission, 21(7):491-516. Schaefer, K. M., 2001., Reproductive biology of tunas., Fish Physiology, 19:225-270. Sánchez Ortíz , C. , Arreola Robles , J. L. , Aburto Oropeza , O. and Cortés Hernández, M., 1997., Peces de arrecife en la región de La Paz, B.C.S.. En Urbán Ramírez, J. y M. Ramírez Rodríguez (Eds.). La Bahía de La Paz investigación y conservación., Universidad Autónoma de Baja California Sur:189-200. Van der Heiden , A. M. and Findley, L. 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Acknowledgements

Ross Robertson, Smithsonian Tropical Research Institute I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.