Actinopteri (ray-finned fishes) > Eupercaria/misc
() > Gerreidae
Etymology: Eucinostomus: Greek, eu = good + Greek, kyon = dog + Greek, stoma = mouth (Ref. 45335). More on author: Gill.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal. Tropical
Southeast Pacific: Panama to Peru, including the Galapagos Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.0 cm TL male/unsexed; (Ref. 55763); common length : 12.0 cm TL male/unsexed; (Ref. 55763)
Body fusiform, compressed, and not very deep (depth contained 2.5 to 3.3 times in standard length); jaws protrusible; edge of preopercle smooth; second anal spine short and strong; pelvic fins long (1.5 to 1.8 times in head length); body silvery with iridescent green tones; fins transparent except for tips or longest dorsal spines which are black (Ref. 55763).
Occurs in shallow coastal waters, including estuaries; usually over sand or mud bottoms.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R. and D.R. Robertson, 1994. Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 20.6 - 28.3, mean 24.7 °C (based on 62 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00898 - 0.01537), b=3.09 (3.05 - 3.13), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.3 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.).
Vulnerability (Ref. 59153
): Low vulnerability (20 of 100) .