Caranx crysos
Blue Runner
NS
GNR
Collection Details
Specimens
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Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Carangidae (Jacks)
Caranx
Caranx crysos (Blue Runner)
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
Elongate and moderately compressed body; relatively short second dorsal fin; bony scutes on straight portion of lateral line; dorsal profile of head evenly convex; snout moderately acute; eye with adipose eyelid; maxilla extends to about middle of eye; jaw teeth in narrow bands with outer row enlarged and recurved; preopercular margin smooth in specimens > 40 mm SL; gill rakers on first arch lathlike, 10-14 on upper limb and 23-28 on lower limb; 7 branchiostegal rays; pectoral fin falcate with 21-23 rays; first dorsal fin with 8 spines; second dorsal fin with 1 spine and 22-25 rays; anal fin with 2 free spines followed by 1 spine and 19-21 rays; chest scaled; lateral line moderately arched anteriorly; 86-98 lateral line scales with last 46-56 forming scutes; caudal peduncle with 2 keels; 25 vertebrae (10 precaudal, 15 caudal)
Dark olive to bluish dorsally and silvery to brassy ventrally; juveniles with 7 vertical bars on body
Distribution
Western Atlantic from Nova Scotia and Bermuda to Brazil, including the northern and southern Gulf of Mexico, the Bahamas, and the Antilles
Northern and southern Gulf of Mexico
Habitat Associations
Outer continental and insular shelves; not associated with reefs; depth range not specified
Juveniles pelagic and associated with rafts of Sargassum weed
Biology
Shrimps, crabs, other invertebrates, and ray-finned fishes
Maximum known size about 630 mm FL
A schooling species (Ref. 5217, 57391) generally not far from the coast (Ref. 5217), in coastal marine and brackish waters to at least 100 m depth (Ref. 57392). Juveniles often found in association with floating Sargassum (Ref. 5217), often entering lagoons and estuaries (Ref. 57392). Adults feed on fishes, shrimps, and other invertebrates. They spawn offshore from January through August (Ref. 26938). Eggs are pelagic (Ref. 4233). Excellent food fish (Ref. 9626); marketed fresh, frozen (Ref. 5521), and salted. Often used for bait (Ref. 26938). Maximum reported total length 550mm in Ref. 57392.
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none.
IUCN Red List Status: Least Concern (LC), assessed 2009-02-04. Resilience: Medium (K=0.36; tmax=11; Fec=41,000).
Commercial or Environmental Importance
Fisheries: minor commercial; gamefish.
References
Berry 1959
Böhlke and Chaplin 1968
Randall 1968a (as C. fusus)
Randall 1996 (as Carangoides crysos)
Hoese and Moore 1977
Hoese and Moore 1998
Matsuura 1983e
Robins and Ray 1986
Boschung 1992
Cervigón 1993b
Schaldach et al. 1997
Smith 1997
Smith-Vaniz et al. 1999
Smith-Vaniz 2002c
Randall, J.E. (1967) Food habits of reef fishes of the West Indies. Stud. Trop. Oceanogr. Miami 5:665-847.
Daget, J. and W.F. Smith-Vaniz (1986) Carangidae. p. 308-322. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2.
Smith-Vaniz, W.F. (1986) Carangidae. p. 815-844. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and the Mediterranean. UNESCO, Paris. vol. 2.
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.
Smith-Vaniz, W.F., J.-C. Quéro and M. Desoutter (1990) Carangidae. p. 729-755. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2.
Randall, J.E. (1996) Caribbean reef fishes. Third Edition - revised and enlarged. T.F.H. Publications, Inc. Ltd., Hong Kong. 3nd ed. 368 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.
da Silva Monteiro, V.M. (1998) Peixes de Cabo Verde. Ministério do Mar, Gabinete do Secretário de Estado da Cultura. M2-Artes Gráficas, Lda., Lisbon. 179p.
Bauchot, M.-L. (2003) Carangidae. p. 464-483 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p.
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