Eugerres brasilianus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Gerreidae

Scientific Name: Eugerres brasilianus (Cuvier, 1830)
Regional Assessments:
Common Name(s):
English Brazilian Mojarra, Mojarra del Brasil, Streaked mojarra
French Blanche brésilienne
Spanish Mojarra brasilena, Mojarra brasileña, Mojarra del Brasil, Patao brasileño
Diapterus brasilianus (Cuvier, 1830)
Gerres brasilianus Cuvier, 1830
Gerres patao Poey, 1860

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2015
Date Assessed: 2010-03-01
Assessor(s): Fraser, T. & Gilmore, G.
Reviewer(s): Cox, N.A.
Contributor(s): Chao, L., Tolan, J., Vega-Cendejas, M., McEachran, J.D., Espinosa-Perez, H., Jelks, H. & Collette, B.
Facilitator/Compiler(s): Hines, A. & Strongin, K.
This widely distributed species is abundant where it occurs in estuaries, mangroves and lagoons. It is commonly utilized by fisheries in some parts of its range and other potential threats include pollution from commercial and artisanal fisheries and habitat degradation due to coastal development, but there is no evidence to suggest that this poses a major threat. Therefore, it is listed as Least Concern.

Geographic Range [top]

Range Description:This species is distributed in the western Atlantic in the Gulf of Mexico from Tuxpan, Mexico to northwestern Cuba, in the Caribbean from Cuba, Puerto Rico, the Virgin Islands, Curacao, along the Central American coast from Mexico to Panama (San Blas), and off Brazil from Amapa to Santa Catarina (Castro-Aguirre 1978, Cervigón et al. 1992, Castro-Aguirre et al. 1999, Floeter et al. 2003, Vaslet et al. 2008, Felder et al. 2009, R. Robertson pers. comm. 2014).
Countries occurrence:
Belize; Brazil; Costa Rica; Cuba; Curaçao; Guatemala; Honduras; Mexico; Nicaragua; Panama; Puerto Rico; Virgin Islands, British; Virgin Islands, U.S.
FAO Marine Fishing Areas:
Atlantic – western central; Atlantic – southwest
Additional data:
Lower depth limit (metres):30
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is very abundant in much of its range. It is one of the most abundant fishes in the coastal lagoons of Cuba (Sanson et al. 1978). It was the third most abundant fish recorded during flood tide in areas of mangrove oyster (Crassostrea rhizophorae) reef restoration in Fortim, Ceará, Brazil (de Freitas et al. 2006). It was found in higher densities in the oligohaline upper estuaries of the Guaraguaçu River (Brazil) (Contente et al. 2011) and it is among the top five fished species in the São Francisco River (Soares et al. 2007). It was also dominant in the middle estuary of Sao Francisco, which is a transitional environment associated with harsh environmental conditions (Neves et al. 2010).
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This demersal, euryhaline species occurs in shallow water over soft bottoms in estuaries, mangroves and lagoons, and tolerates freshwater (Thomerson and Greenfield 1975, Cervigón et al. 1992, Rocha and Schiavetti 2007). In an area of mangrove oyster restoration, the occurrence of this species was found to positively correlate with water transparency (de Freitas et al. 2006). Juveniles have been collected during freshwater surveys off Belize (Thomerson and Greenfield 1975). It feeds on polychaetes, copepods, barnacles and insects (Teixeira and Helmer 1997). During sampling in the Almada River, Brazil, this species did not exhibit any seasonal trends in abundance (Rocha and Schiavetti 2007). Its maximum size is 50 cm FL (García-Arteaga et al. 1997). In an effort to improve and develop techniques for experimental-scale mass production of E. brasilianus in Cuba, Alvarez-Lajonchere et al. (1996) recorded the fecundity of spawned female specimens to be 1,395 +/- 249 eggs/g body weight (range = 367-2,167 egg/g).
Systems:Freshwater; Marine

Use and Trade [top]

Use and Trade: This is a commercially important species which is commonly caught in lagoons, rivers, and streams and is also aquacultured in fish ponds (Alvarez-Lajonchère et al. 1996). Efforts have been made to artificially mass-produce it in order to supplement some of the demand for wild harvest as food fish (Hernández Molejóna and Alvarez-Lajonchère 2003). It is among the top five fished species in the São Francisco River (Soares et al. 2007). It is caught primarily as a food fish. It is used to make fish meal and flour in Mexico (M. Vega-Cendejas pers. comm. 2014).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

Threats [top]

Major Threat(s): This species is highly targeted as a food fish. However, as it is also being bred in captivity this is not considered to be a major threat. Also, due to its dependence on freshwater, it is susceptible to alteration of freshwater quality and flow. It may also be susceptible to pollution due to artisanal and commercial fisheries that deposit a variety of plastic marine debris, some of which can be easily ingested by fish. Ingested plastic marine debris can result in intestinal damage and can transfer persistent organic pollutants to the fish (Ramos et al. 2012).

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures in place. There is a need for research on the effects of freshwater stream modification and system degradation on this species.

Citation: Fraser, T. & Gilmore, G. 2015. Eugerres brasilianus. The IUCN Red List of Threatened Species 2015: e.T185998A1801620. . Downloaded on 16 October 2018.
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