Eucinostomus gula
Silver Jenny
NS
GNR
Collection Details
Specimens
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Gerreidae (Mojarras)
Eucinostomus
Eucinostomus gula (Silver Jenny)
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.
It may contain errors in spelling, punctuation, or formatting.
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Characters
Relatively deep bodied, premaxillary groove constricted or crossed by scales, V-shaped pattern between nostrils, light band posterior to nostrils, dorsal profile of head slightly convex to nearly straight, maxilla extends to near anterior margin of orbit, margins of lachrymal and preopercular bones entire, opercular margin with distinct notch above fleshy flap, gill rakers on first arch short and number 8 (rarely 9) on lower limb, measurements (% SL): head length 29%–35%, upper jaw length 9%–11%, eye diameter 8%–12%, last dorsal fin spine length 7%–10%, depressed anal fin length 24%–28%, second anal fin spine length 7%–14%, body depth 38%–46%, caudal peduncle depth 11%–13%, pectoral fin with 14 to 16 rays, dorsal fin deeply notched with 9 spines and 10 rays, anal fin with 3 spines and 7 rays, third spine segmented but not branched in small specimens, lateral line scales number 42 to 44 (rarely 41 or 45)
Straw yellow to silver in preservative and silver in life, juveniles with diagonal bars and mottling on upper sides that continue as blotches on lower flanks, markings disappear in specimens greater than 70 mm SL
Distribution
Western Atlantic from New Jersey and Bermuda to Argentina, including the Gulf of Mexico, the Bahamas, and the Greater and Lesser Antilles
Throughout the Gulf of Mexico
Habitat Associations
Coastal waters, depth range 9-24 m (offshore waters)
Associated with grass beds
Biology
Maximum known size is 147 mm SL
Inhabits shallow waters, being especially abundant over mud bottoms in mangrove-lined lagoons or creeks; larger individuals may also occur on vegetated sand grounds in marine areas. Enters fresh water in limestone regions (Ref. 7251). May occur in aggregations (Ref. 3722). Probably feeds on small benthic invertebrates (Ref. 3722). Marketed fresh but not highly esteemed (Ref. 3722).
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none.
IUCN Red List Status: Least Concern (LC), assessed 2010-03-01. Resilience: Medium (K=0.3-0.5;).
Commercial or Environmental Importance
Fisheries: minor commercial.
References
Böhlke and Chaplin 1968 (as E. gula, in part)
Hoese and Moore 1977 (in part), 1998
Matheson 1983
Matheson and McEachran 1984
Robins and Ray 1986
Boschung 1992
Schaldach et al. 1997
Vega-Cendejas et al. 1997
Castro-Aguirre et al. 1999
Smith-Vaniz et al. 1999
Gilmore and Greenfield 2002
Jenyns, L. (1842) Fish. In C. Darwin (ed.) The zoology of the voyage of H.M.S. Beagle, under the command of Captain Fitzroy, R.N., during the years 1832-1836. Smith, Elder & Co., London (in 4 parts): p. 1-32 (Jan. 1840); 33-64 (Jun. 1840); 65-96 (Apr. 1841); 97-172 (Apr. 1842).
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.
Vega-Cendejas, M.E., M. Hernandez and F. Arreguin-Sanchez (1994) Trophic interrelations in a beach seine fishery from the northwestern coast of the Yucatan peninsula. J. Fish Biol. 44(4):647-659.
Motta, P.J., K.B. Clifton, P. Hernandez, B.T. Eggold, S.D. Giordano and R. Wilcox (1995) Feeding relationships among nine species of seagrass fishes of Tampa Bay, Florida. Bull. Mar. Sci. 56(1):185-200.
Gines, H. and F. Cervigón (1967) Exploracion pesquera en las costas de Guyana y Surinam año 1967. Estacíon de Investigaciones Marinas de Margarita. Fundacíon La Salle de Ciencias Naturales, no. 29.
Mexicano-Cíntora, G. (1999) Crecimiento y reproducción de la mojarra, Eucinostomus gula de Celestún, Yucatán, México. Proc. Gulf Carribb. Fish. Inst. 45:524-536.
Patzner, R.A. (2008) Reproductive strategies of fish. pp. 311-350. In Rocha, M.J., A. Arukwe and B.G. Kapoor (eds). Fish reproduction: cytology, biology and ecology. Science Publisher, Inc. Oxford. 631 p.
Amador-del Angel, L.E., E. Guevara-Carrió, R. Brito and A.T. Wakida-Kusunoki (2015) Length-weight relationships of fish species associated with the mangrove forest in the southwestern Terminos Lagoon, Campeche (Mexico). J. Appl. Ichthyol. 31(1):228-230. DOI: 10.1111/jai.12490
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