Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Temperate
Northwest Pacific: southern Korea to southern Japan, except the Ryukyus.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 23.2 cm SL male/unsexed; (Ref. 116290)
Morphology | Morphometrics
soft rays: 7 - 8. U-shaped premaxilla groove entirely without scales, even in large specimens. Posterior margin of maxilla usually not beyond a vertical through anterior margin of inner dermal eye opening (rarely just short of vertical). Scales between 5th dorsal fin spine base 3.5. Body often with 6-8 irregular, dusky, oblique and vertical bands dorsolaterally and ventrolaterally (apparent in juveniles and often observed in large specimens). Pelvic fin vivid or dull yellow with a strong black band and clear white distal margin posteriorly when fresh. Supraneural bones 3 (Ref. 35850).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Iwatsuki, Y., S. Kimura and T. Yoshino, 1999. Redescriptions of Gerres baconensis (Evermann & Seale, 1907), G. equulus Temminck & Schlegel, 1844 and G. oyena (Forsskål, 1775), included in the "G. oyena complex", with notes on other related species (Perciformes: Gerreidae). Ichthyol. Res. 46(4):377-395. (Ref. 35850)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00524 - 0.04176), b=3.04 (2.80 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.0 ±0.00 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (27 of 100) .