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Cynoscion squamipinnis (Gunther, 1867)
WEAKFISH
Scalyfin corvina

Life   Vertebrata   Fish   Sciaenidae   Cynoscion

Cynoscion squamipinnis
© Copyright Ross Robertson, 2006 · 12
Cynoscion squamipinnis

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Overview
Main identification features
  • d: viii-ix
  • c: blunt point
  • mouth ends after eye
  • gill rakers : 12-16
  • fins scaly; scales rough
Dorsal rays VII or VIII+I, 21-23; anal rays II, 9; pored lateral-line scales 51-61; gill rakers on lower limb of first arch 9-10, total 12-16; mouth oblique, ends after eye, lower jaw projecting beyond upper jaw; no pores or barbel on chin; teeth in 1-2 series, a pair of large canines at tip of upper jaw; margin of preopercle without serrations; pectoral fins reach beyond tips of depressed pelvic fins; tail fin angular, the middle rays longest; body scales rough; soft dorsal and anal fin completely or mostly covered with scaly sheath.

Color silvery, greyish on upper back; tip of lower jaw dusky; inside of mouth yellow orange; pectoral axil dark; dorsal and anal fins dusky; tip of tail fin blackish.

Grows to a maximum size of 64 cm.

Inhabits coastal seas, common in shallow areas but not in estuaries.

Depth: 1-30 m.

Southern Baja and the Gulf of California to northern Peru.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); North Temperate (Californian Province &/or Northern Gulf of California).
Depth Range Max: 30 m.
Depth Range Min: 1 m.
Diet: bony fishes; mobile benthic crustacea (shrimps/crabs); octopus/squid/cuttlefish.
Eastern Pacific Range: Northern limit=32; Southern limit=-4; Western limit=-115; Eastern limit=-78; Latitudinal range=36; Longitudinal range=37.
Egg Type: Pelagic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Bentho-Pelagic.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Estuary; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Flotsam; Water column.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 64 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; 3 provinces (Cortez + Mexican + Panamic) endemic; All species.
Residency: Resident.
Salinity: Brackish; Marine.
Water Column Position: Mid Water; Near Bottom; Bottom; Bottom + water column;


Names
Scientific source:

Links to other sites

References
  • Breder, C.M. Jr., 1936., Scientific results of the second oceanographic expedition of the "Pawnee" 1926. Heterosomata to Pediculati from Panama to Lower California., Bull. Bingham Oceanogr. Collect. Yale Univ., 2(3):1-56.
  • Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • Castri-Aguirre, J.L., Espinoza-Pérez, H. and Schmitter-Soto, J.J., 2002., Lista sitemática, biogeográfica y ecológica de la ictiofauna estuarino lagunar y vicaria de México. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:117-142.
  • Castro-Aguirre, J.L., 1999., Ictiofauna estuarino-lagunar y vicaria de México., Editorial Limusa S.A. de C.V.: 1-629pp.
  • 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 III. Vertebrados - Parte 2., FAO3:1201-1813.
  • Günther, A., 1867., On the Fishes of the States of Central America, founded upon specimens collected in the fresh and marine waters of various parts of that country by Messrs. Salvin and Godman and Capt. J. M. Dow., Proc. Zool. Soc. London, 1866:600-604.
  • 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.
  • Jordan , D.S. and Evermann, B.W., 1898., The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part II., Bull. U.S. Nat. Mus., 47:1241-2183.
  • Jordan , D.S. and Gilbert, C.H., 1882., List of Fishes now in the Museum of Yale College, Collected by Prof. Frank H. Bradley, at Panama, with Descriptions of Three New Species., Proc. U.S. Nat. Mus., 5:620-632.
  • 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.
  • Meek , S.E. and Hildebrand, S.F., 1925., The marine fishes of Panama. Part II., Field Mus. Nat. Hist., Zool. Ser. Publ., XV:331-707.
  • Minckley, W.L., 2002., Fishes of the lowermost colorado river, its delta, and estuary: a commentary on biotic change. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:63-78.
  • Phillips, P. C., 1981., Annotated Checklist of Fishes at Jiquilisco Bay, El Salvador., Revista de Biologia Tropical, 29:45-58.
  • Rojas , J. R. , Pizarro , J. F. and Castro, M.V., 1994., Diversidad y Abundancia íctica en tres áreas de manglar en el Golfo de Nicoya, Costa Rica., Revista de Biologia Tropical, 42:663-672.
  • Rubio , R. E. A. and Estupiñan, F., 1990., Ictiofauna del Parque Nacional Natural Sanquianga, un Analisis de su Estructura y Perspectivas para su Manejo., Memorias del VII Seminario Nacional de las Ciencias y Tecnologías del Mar. Comisión Colombiana de Oceanografía. Bogota, Colombia., :660-670.
  • 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.
  • Rubio, E.A., 1990., Sistematica y Abundancia de los Peces de la Familia Sciaenidae (Pisces: Perciformes) en areas Aledañas a la Bahia de Buenaventura., Memorias del VII Seminario Nacional de las Ciencias y Tecnologías del Mar. Comisión Colombiana de Oceanografía. Bogota, Colombia., :413-421.

Acknowledgements

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


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Cynoscion squamipinnis, Weakfish

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Cynoscion squamipinnis ( Günther , 1867 )

Weakfish Add your observation in Fish Watcher
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Cynoscion squamipinnis   AquaMaps   Data sources: GBIF OBIS
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Pictures | Google image Image of Cynoscion squamipinnis (Weakfish) Cynoscion squamipinnis
Picture by Robertson, R.

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

Actinopteri (ray-finned fishes) > Eupercaria/misc (Various families in series Eupercaria) > Sciaenidae (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335 ) .
More on author: Günther .

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

Marine; brackish; benthopelagic. Tropical; 31°N -

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

Eastern Pacific: Gulf of California to Peru.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 64.0 cm TL male/unsexed; (Ref. 9118 ); common length : 40.0 cm TL male/unsexed; (Ref. 9118 )

Biology     Glossary (e.g. epibenthic)

Adults inhabit coastal waters, along shores and in estuaries (Ref. 9118 ). Feed on fishes, shrimps and other crustaceans (Ref. 9118 ).

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

Main reference Upload your references | References | Coordinator | Collaborators

Chao, L.N. , 1995. Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118 )

IUCN Red List Status (Ref. 125652 )

  Least Concern (LC)  ; Date assessed: 16 October 2019

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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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 - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969 ): 19.9 - 28.4, mean 25.6 °C (based on 70 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00741 (0.00455 - 0.01207), b=3.06 (2.92 - 3.20), in cm total length, based on LWR estimates for species & Genus-BS (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.9   ±0.63 se; based on food items. Resilience (Ref. 120179 ):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.). Fishing Vulnerability (Ref. 59153 ):  Moderate to high vulnerability (46 of 100) . Climate Vulnerability (Ref. 125649 ):   (0 of 100) .

Entered by Garilao, Cristina V. Modified by Reyes, Rodolfo B. Fish Forum
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