Main identification features
- 1st dorsal fin : high, pointed, front straight
- 1st dorsal fin : origin over rear 1/3 pectoral inner margin
- low ridge between ds 2nd dorsal fin less than 2.3 percent total length
- pectoral: rear edge ~straight
A large, relatively slender grey shark; snout moderately long and broadly rounded; a low ridge between dorsal fins; origin of first dorsal fin above about rear edge of pectoral fins; first dorsal fin moderately large (to height 9.1-12.1% or more of total length), with straight front edge, its apex pointed or narrowly rounded, moderately concave rear edge its origin over the pectoral fin; origin of second dorsal fin about over anal fin origin; pectorals large, with rounded to pointed tips and straight rear edge.
Brownish grey on back and sides, white below; tips of most fins dusky, especially underside of pectorals.
Attains 370 cm; size at birth 57-80 cm.
Habitat: usually associated with oceanic islands. Often occurs in aggregations.
Depth: 0-180 m.
Circumtropical distribution; all the oceanic islands, also coasts of Baja California, and the Gulf of California to Peru.
Very similar in appearance and easily confused with C. obscurus; best means of separation is the taller dorsal fin of C. galapagensis (9.1-12.1 % of TL vs. 5.8-9.9 % for C. obscurus).
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: 180 m.
Depth Range Min: 0 m.
Diet: bony fishes; octopus/squid/cuttlefish; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=29; Southern limit=-6; Western limit=-115; Eastern limit=-78; Latitudinal range=35; Longitudinal range=37.
Egg Type: Live birth; No 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); All Pacific (West + Central + East); TEP non-endemic; "Transpacific" (East + Central &/or West Pacific); All species.
Habitat: Reef associated (reef + edges-water column & soft bottom); Water column; Reef (rock &/or coral).
Inshore Offshore: Inshore; Offshore; In & Offshore.
IUCN Red List: Near threatened; Listed.
Length Max: 370 cm.
Regional Endemism: Island (s); Continent; Continent + Island (s); Eastern Pacific non-endemic; Tropical Eastern Pacific (TEP) non-endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Mid Water; Near Bottom; Near Surface; Surface; Bottom; Bottom + water column;
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- Allen , G.R. and Robertson, D.R., 1997., An Annotated Checklist of the fishes of Clipperton Atoll, Tropical Eastern Pacific., Revista de Biologia Tropical, 45:813-843.
- 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.
- Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498.
- Compagno, L.J.V., 1984., Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Part 2. Carcharhiniformes. FAO Species Catalogue., FAO Fish. Synop. No 125, 4(2):251-655.
- Edgar, G.J. Banks, S., Fariña, J.M., Calvopiña, M. and Martínez, C., 2004., Regional biogeography of shallow reef fish and macro-invertebrate communities in the Galapagos archipelago., Journal of Biogeography, 31:1107-1124.
- 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.
- 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.
- Gotshall, D.W., 1996., Fishes of Rocas Alijos. In Rocas Alijos. Ed. R. W. Schmieder. Cornell Expeditions., Kluwer Academic Publishers: 347-354.
- Humann, P., 1993., Reef Fish Identification: Galapagos., New World Publishing:192pp.
- 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.
- McCosker , J.E. and Rosenblatt, R.H., 1975., Fishes collected at Malpelo Island. In Graham, J.B. (ed.) The Biological Investigation of Malpelo Island, Colombia., Smithsonian Contrib. Zool., 176:91-93.
- Meek , S.E. and Hildebrand, S.F., 1923., The marine fishes of Panama. Part I., Field Mus. Nat. Hist., Zool. Ser. Publ., XV:1-330.
- 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.
- Snodgrass , R. E. and Heller, E., 1905., Papers from the Hopkins Stanford Galapagos expedition, 1898-1899. XVII. Shorefishes of the Revillagigedo, Clipperton, Cocos and Galapagos Island., Proc. Wash. Acad. Sci., 6:333-427.
- 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.
- Walker, B. W. and Baldwin, W. J., 1964., Provisional check list of fishes of the Revillagigedo islands., 18 pp.
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