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Teleostei (teleosts) > Eupercaria/misc (Various families in series Eupercaria) > Haemulidae (Grunts) > Haemulinae
Etymology: Rhonciscus: Diminutive of ρογκοζ (snoring).
More on authors: Jordan & Evermann.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; freshwater; brackish; benthopelagic. Tropical; 21°C - 30°C (Ref. 36880); 37°N -

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Central and South America: Pacific drainages from Baja California, Mexico to Peru.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 51.0 cm TL male/unsexed; (Ref. 40637); common length : 33.0 cm TL male/unsexed; (Ref. 9114); max. published weight: 1.6 kg (Ref. 4699)

Short description Identification keys | Morphology | Morphometrics

Body oblong, somewhat compressed, and not deep (depth contained 3.1 to 3.8 times in standard length); mouth large, terminal, and almost horizontal, its posterior edge located at the same level as the anterior rim of the eye; first gill arch with 7 to 9 gill rakers; dorsal fin notched, with 12 to 13 spines and 12 soft rays (XII-XIII, 12); pectoral fins short, not reaching distal edge of pelvic fins; second anal spine longer and thicker than third; back olive green; belly silvery; entire body iridescent (Ref. 55763).

Benthic-pelagic species of coastal waters which may enter rivers (Ref. 55763). Apparently confined to fresh waters, ascending rivers with moderate currents (Ref. 9114). More abundant near the outlets of rivers and creeks, but not in brackish or marine waters. Reaches at least 640 m elevation and inhabits currents of low to moderate velocity. Feed on crustaceans and fish (Ref. 36880). Marketed fresh (Ref. 9114).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Oviparous, distinct pairing during breeding (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 07 February 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial; gamefish: yes

FAO - Publication: search | FishSource |

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Length-weight rel.
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Estimates based on models

Preferred temperature (Ref. 123201): 24.6 - 27.1, mean 25.9 °C (based on 10 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00912 (0.00526 - 0.01582), b=2.91 (2.76 - 3.06), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 4.0 ±0.66 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (40 of 100).

Price category (Ref. 80766): Medium.

Rhonciscus bayanus (Jordan & Evermann, 1898)