Teleostei (teleosts) > Eupercaria/misc
(Various families in series Eupercaria) > Haemulidae
(Grunts) > Plectorhinchinae
Etymology: Genyatremus: Greek, geny, -yos = face, jaw + Greek, trema, = aperture (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Tropical; 25°N -
Eastern Pacific: southern margins of Gulf of California to Peru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 45.0 cm TL male/unsexed; (Ref. 11035); common length : 35.0 cm TL male/unsexed; (Ref. 9114)
Body compressed and deep (depth contained 2.0 to 2.3 times in standard length); mouth small and terminal with thick, fleshy lips. Dorsal fin with 11 to 12 spines and 13 to 16 soft rays (XI, XII, 13-16); pectoral fins shorter than head, not reaching origin of anal fin; lateral line with 45 to 52 scales; scale series above lateral line parallel to it; back brownish; belly silvery; flanks with 5 dark vertical bars; fins dark (Ref. 55763).
Benthic over hard surfaces of the continental shelf (Ref. 9114). Marketed fresh (Ref. 9114).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing during breeding (Ref. 205).
McKay, R.J. and M. Schneider, 1995. Haemulidae. Burros, corocoros, chulas, gallinazos, roncos. p. 1136-1173. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9114)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 24.6 - 28.5, mean 27 °C (based on 42 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01950 (0.00838 - 0.04534), b=2.95 (2.76 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (35 of 100).