Hemicaranx amblyrhynchus
Bluntnose Jack
NS
G5
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Carangidae (Jacks)
Hemicaranx
Hemicaranx amblyrhynchus (Bluntnose Jack)
Description
This species account was compiled from
Composite (multiple sources) (McEachran, J.D. and J.D. Fechhelm. Fishes of the Gulf of Mexico. University of Texas Press, Austin.)
and processed using AI-assisted text extraction.
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Characters
Moderately elongate and compressed body; bony scutes on straight portion of lateral line; first dorsal fin shorter than lobe of second dorsal fin; relatively short snout; dorsal profile of head evenly convex; snout blunt; eye with weak adipose eyelid; maxilla extends to anterior margin of eye; jaw teeth narrow and in a single row; preopercular margin smooth in specimens > 44 mm FL; 7-10 upper and 18-23 lower gill rakers on first arch; 6 branchiostegal rays; pectoral fin moderately falcate with 20-22 rays; first dorsal fin with 7 spines; second dorsal fin with 1 spine and 25-30 rays; anal fin with 2 free spines followed by 1 spine and 21-26 rays; upper lobe of caudal fin longer than lower; chest fully scaled; 38-56 scutes on straight section of lateral line; 26 vertebrae (10 precaudal, 16 caudal)
Dark bluish green dorsally and silvery ventrally; large black blotch on operculum; dark margin on dorsal fins and upper lobe of caudal fin; juveniles with 4-5 dark bars on body
Distribution
Western Atlantic from North Carolina to Brazil, including northern and southern Gulf of Mexico
Habitat Associations
Coastal waters; associated with the bottom; enters brackish water
Juveniles associated with jellyfishes
Biology
Maximum known size about 290 mm FL
Adults are coastal species. They do not form large schools (Ref. 35237). Juveniles are encountered in brackish estuaries (Ref. 5217), moving to greater depths as it grows, but not deeper than 50 m (Ref. 9626). Eggs are pelagic, spawning occurs generally in summer (Ref. 35237). Marketed fresh (Ref. 9626).
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none.
IUCN Red List Status: Least Concern (LC), assessed 2012-08-21. Resilience: Medium (Preliminary K or Fecundity.).
Commercial or Environmental Importance
Fisheries: minor commercial.
References
Hoese and Moore 1977
Hoese and Moore 1998
Robins and Ray 1986
Boschung 1992
Cervigón 1993b
Schaldach et al. 1997
Castro-Aguirre et al. 1999
Smith-Vaniz 2002c
Cervigón, F., R. Cipriani, W. Fischer, L. Garibaldi, M. Hendrickx, A.J. Lemus, R. Márquez, J.M. Poutiers, G. Robaina and B. Rodriguez (1992) Fichas FAO de identificación de especies para los fines de la pesca. Guía de campo de las especies comerciales marinas y de aquas salobres de la costa septentrional de Sur América. FAO, Rome. 513 p. Preparado con el financiamento de la Comisión de Comunidades Europeas y de NORAD.
Robins, C.R. and G.C. Ray (1986) A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p.
Cervigón, F. (1993) Los peces marinos de Venezuela. Volume 2. Fundación Científica Los Roques, Caracas,Venezuela. 497 p.
Uyeno, T., K. Matsuura and E. Fujii (eds.) (1983) Fishes trawled off Suriname and French Guiana. Japan Marine Fishery Resource Research Center, Tokyo, Japan. 519 p.
Claro, R. (1994) Características generales de la ictiofauna. p. 55-70. In R. Claro (ed.) Ecología de los peces marinos de Cuba. Instituto de Oceanología Academia de Ciencias de Cuba and Centro de Investigaciones de Quintana Roo.
Gómez-Canchong, P., L. Manjarrés M., L.O. Duarte and J. Altamar (2004) Atlas pesquero del area norte del Mar Caribe de Colombia. Universidad del Magadalena, Santa Marta. 230 p.
Gross, M.R. and R. Shine (1981) Parental care and mode of fertilization in ectothermic vertebrates. Evolution 35(4):775-793.
Comments On Hemicaranx amblyrhynchus