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Macrodon mordax (Gilbert and Starks, 1904)
DOGTEETH WEAKFISH
Toothed weakfish

Life   Vertebrata   Fish   Sciaenidae   Macrodon

Macrodon mordax
© Copyright Ross Robertson, 2006 · 12
Macrodon mordax

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Overview
Main identification features Elongate, compressed; dorsal rays IX-X+I, 27-30; anal rays I or II, 9-10, short base, weak spines; pored lateral-line scales 45-55; gill rakers on lower limb of first arch 7-8, total rakers 9-11; mouth large and oblique, lower jaw projecting; eye moderate, 5.6-6.5 in head length; minute pores often present on tip of chin, no barbel; prominent curved, arrow-tipped canine teeth in both upper and lower jaws; margin of preopercle without serrations; pectorals long, reaching beyond tips of depressed pelvic fins; dorsal and anal spines weak; tail S shaped, longer in young; soft dorsal and anal fins with scaly sheath covering almost entire fin.

Color silvery, bluish or greenish greyish on upper back; axil of pectoral fin dark; fins whitish to slightly dusky.

Size: grows to 50 cm.

Inhabits coastal waters,including bays and estuaries.

Depth: 5-30 m.

Costa Rica to Ecuador.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 30 m.
Depth Range Min: 5 m.
Diet: bony fishes; octopus/squid/cuttlefish; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=10; Southern limit=1; Western limit=-85; Eastern limit=-78; Latitudinal range=9; Longitudinal range=7.
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; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Water column.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 50 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; Panamic province 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
  • Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • 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.
  • Gilbert , C.H. and Starks, E.C., 1904., The fishes of Panama Bay., Mem. Calif. Acad.Sci., 4:1-304.
  • 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.
  • 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.
  • 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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