Teleostei (teleosts) > Eupercaria/misc
(Various families in series Eupercaria) > Gerreidae
Etymology: Eugerres: Greek, eu = good, well + Latin, gerres = a kind of anchovies; cited by Plinius; mexicanus: Named for the late Dr. José Luis Castro Aguirre, who made several important contributions to our understanding of Mexican fish fauna (Ref. 93806).
More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; pH range: 8.0 - ?. Tropical
Central America: Atlantic slope of southern Mexico and northern Guatemala.
Length at first maturity / Size / Weight / Age
Maturity: Lm 20.5  range ? - ? cm
Max length : 24.2 cm SL male/unsexed; (Ref. 93806); max. published weight: 347.00 g (Ref. 93806)
Morphology | Morphometrics
A tropical, demersal species confined to freshwater environment unlike other congeners (Ref. 33568). Collected from below surface in channel with sandy-slime bottom (pH 8.0, conductivity 478 µÊS/cm, dissolved solids 242 mg/l, dissolved oxygen 6.9 mg/l, and 26°C) using a 90 cm seine net. Food fish (Ref. 93806).
Deckert, G.D. and D.W. Greenfield, 1987. A review of the western Atlantic species of the genera Diapterus and Eugerres (Pisces: Gerreidae). Copeia 1987(1):182-194. (Ref. 33568)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01380 (0.00879 - 0.02168), b=3.08 (2.95 - 3.21), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (20 of 100).