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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
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Decapterus macrosoma

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Decapterus macrosoma
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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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https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Decapterus&speciesname=macrosoma ---> https://fishbase.mnhn.fr/summary/Decapterus-macrosoma.html
Decapterus macrosoma, Shortfin scad : fisheries, bait
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Decapterus macrosoma Bleeker , 1851

Shortfin scad Add your observation in Fish Watcher
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Decapterus macrosoma   AquaMaps   Data sources: GBIF OBIS
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Pictures | Google image Image of Decapterus macrosoma (Shortfin scad) Decapterus macrosoma
Picture by Robertson, R.

Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Carangiformes (Jacks) > Carangidae (Jacks and pompanos) > Caranginae
Etymology: Decapterus: Greek, deka = ten + Greek, pteron = wing, fin (Ref. 45335 ) .
More on author: Bleeker .

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 20 - 214 m (Ref. 58302 ), usually 30 - 70 m (Ref. 37816 ). Tropical; 39°N - 34°S, 180°W - 180°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific and Southeast Atlantic: from Knysna to Natal, South Africa to Australia, including Persian Gulf and the Red Sea, and in the Central Pacific Islands from South Korea to Gulf of California to Peru, including Galapagos Islands (Ref. 9283 ). Distribution in south Western Australia, and South Australia is false.

Length at first maturity / Size / Weight / Age

Maturity: L m 16.8   range ? - ? cm
Max length : 35.0 cm TL male/unsexed; (Ref. 3197 ); common length : 25.0 cm TL male/unsexed; (Ref. 9137 )

Short description Morphology | Morphometrics

Dorsal spines (total): 9; Dorsal soft rays (total): 338; Anal spines : 3; Anal soft rays : 27 - 30. Body slender, elongate, and somewhat circular in cross section; posterior end of upper jaw concave dorsally and with a rounded protrusion ventrally; edge of shoulder girdle (cleithrum) with two small papillae, the lower one larger; dorsal and anal fin each followed by a separate finlet (Ref. 55763 ). Color metallic blue dorsally, silvery ventrally; fins hyaline; opercle with a small black spot (Ref. 2334 ). 24-40 scutes. Very slender compared to similar species (Ref. 48635 ).

Biology     Glossary (e.g. epibenthic)

A predominately pelagic schooling species (Ref. 9283 , 48635 , 58302 ). Occasionally seen in small groups along reef slopes adjacent to deep water in pursuit of zooplankton (Ref. 48635 ). Adults feed mainly on small invertebrates (Ref. 5213 ). Marketed fresh and salted or dried (Ref. 9283 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Smith-Vaniz, William F. | Collaborators

Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley , 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300 )

IUCN Red List Status (Ref. 130435 )

  Least Concern (LC)  ; Date assessed: 09 March 2015

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: commercial; bait: usually FAO - Fisheries: landings ; Publication: search | FishSource | Sea Around Us

More information

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Fisheries: landings ; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201 ): 22.1 - 28.6, mean 27.3 °C (based on 829 cells). Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.01047 (0.00867 - 0.01264), b=2.96 (2.93 - 2.99), in cm total length, based on LWR estimates for this species (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.4   ±0.45 se; based on food items. Generation time: 1.2 (1.1 - 1.3) years. Estimated as median ln(3)/K based on 45 growth studies. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (K=0.50-1.60; Fec = 43,000). Prior r = 1.11, 95% CL = 0.73 - 1.67, Based on 3 stock assessments. Fishing Vulnerability (Ref. 59153 ):  Low vulnerability (16 of 100). Price category (Ref. 80766 ):   Medium . Nutrients (Ref. 124155 ):  Calcium = 252 [86, 571] mg/100g; Iron = 2.71 [1.03, 5.61] mg/100g; Protein = 20.4 [19.1, 21.6] %; Omega3 = 0.221 [0.118, 0.405] g/100g; Selenium = 73.4 [27.8, 171.8] μg/100g; VitaminA = 48.8 [16.3, 163.0] μg/100g; Zinc = 1.31 [0.80, 2.07] mg/100g (wet weight); based on nutrient studies.

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