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Decapterus macrosoma Bleeker, 1851
SLENDER SCAD
Long-bodied Mackerel-scad; Long-bodied Scad; Shortfin Scad; Slender Mackerel-scad

Life   Vertebrata   Fish   Carangidae   Decapterus

Decapterus macrosoma
© Copyright Photographer/SFTEP, 2002 · 0
Decapterus macrosoma

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Decapterus macrosoma
www.fao.org Copyright Michel Lamboeuf · 0
Decapterus macrosoma
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Overview
Main identification features
  • mouth membrane grey or transparent
  • tail fin clear to greyish
  • top jaw end concave at rear rounded below
Dorsal rays VIII + I, 33-39 (including detached finlet); anal rays II + I, 27-31 (including detached finlet); gill rakers on first arch (including rudiments) 10-12 + 34-38; posterior end of upper jaw concave on upper part, rounded below and slightly projecting behind;l ateral line with long, low arch anteriorly; scales in straight part of lateral line 14-29, followed by 24-40 scutes; total scales and scutes in lateral line (excluding caudal scales) 110-126; scales on top of head usually do not extend forward of posterior margin of pupil; body long and slender; pectoral fins 61-75% of head length; membrane at front of roof of mouth transparent or grey.

Metallic blue on back, silvery below; a small black blotch on upper margin of gill cover; caudal fin translucent to dusky.

Size: attains 35 cm.

Habitat: pelagic in coastal and oceanic waters.

Depth: 12-170 m.

Widely distributed in the tropical Indo-Pacific from East Africa to the Americas; southern Baja to Peru.



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: 170 m.
Depth Range Min: 12 m.
Diet: zooplankton; pelagic fish larvae; pelagic fish eggs; Pelagic crustacea.
Eastern Pacific Range: Northern limit=25; Southern limit=-7; Western limit=-112; Eastern limit=-78; Latitudinal range=32; Longitudinal range=34.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Planktivore.
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: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 35 cm.
Regional Endemism: Continent; Eastern Pacific non-endemic; Continent only; Tropical Eastern Pacific (TEP) 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
  • Bleeker,., 1851., Over eenige nieuwe geslachten en soorten van Makreelachtige visschen van den Indischen Archipel., Natuurkd. Tijdschr. Neder. Indië, 1:341-372.
  • Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • De la Cruz , J. , Galvan , F. , Abitia , L. A. , Rodriguez , J. and Gutierrez, F. J., 1994., Lista sistematica de los peces marinos de Bahia Magdalena, Baja California Sur (Mexico). Systematic List of marine fishes from Bahia Magdalena, Baja California Sur (Mexico)., Ciencias Marinas, 20:17-31.
  • 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.
  • Franke , R. and Acero P., A., 1993., Peces Carangoideos del Parque Gorgona, Pacific Colombiano (Osteichthyes: Carangidae, Nemastistiidae y Coryphaenidae)., Revista de Biología Marina, Valparaiso, 28:51-73.
  • Galván-Magaña, F., Gutiérrez-Sánchez, F., Abitia-Cárdenas, L.A., Rodríguez-Romero, J., 2000., The distribution and affinities of the shore fishes of the Baja California Sur lagoons. In Aquatic Ecosystems of Mexico: Status and Scope. Eds. M. Manuwar, S.G. Lawrence, I.F. Manuwar & D.F. Malley. Ecovision World Monograph Series., Backhuys Publishers:383-398.
  • Hildebrand, S.F., 1946., A descriptive catalog of the shore fishes of Peru., Bull. U.S. Nat. Mus., 189:1-530.
  • Jimenez-Prado, P., Béarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.
  • 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.

Acknowledgements

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


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