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Gerres oblongus Cuvier, 1830

Slender silver-biddy
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Native range | All suitable habitat | Point map | Year 2050
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Gerres oblongus   AquaMaps   Data sources: GBIF OBIS
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Ryukyu Islands country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: ttp://en.wikipedia.org/wiki/Ryukyu_Island
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Myers, R.F., 1999
National Database:

Common names from other countries

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Gerreidae (Mojarras)
Etymology: Gerres: Latin, gerres = a kind of anchovies; cited by Plinius.
  More on author: Cuvier.

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

marino asociado a arrecife; rango de profundidad 0 - 50 m (Ref. 86942).   Tropical; 30°N - 36°S, 19°E - 165°W

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Indo-Pacific: Red Sea and East Africa to Samoa and Tonga, north to the Ryukyu Islands, south to New Caledonia.

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm SL macho / no sexado; (Ref. 1602); common length : 15.0 cm TL macho / no sexado; (Ref. 2871)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 9; Radios blandos dorsales (total) : 10; Espinas anales: 3; Radios blandos anales: 7. Scales between 5th dorsal fin spine base and lateral line, 4-4.5. Upper jaw extending almost to the level of anterior margin of dermal eye opening. Second dorsal fin spine longest, 19-26% of SL (mean 23%). Caudal fin dusky (rarely with dark distal margin); lower edge of lower caudal fin hyaline. Dusky stripes absent or very indistinct along scale rows above lateral line (sometimes 4-9 slightly oblique dusky bands in specimens less than about 10 cm SL); 4-9 slightly oblique dusky bands or columns of ovoid dark spots (rarely brownish) immediately below lateral line, but more obvious in preserved or stressed live specimens (Ref. 41108). Adult body plain silver; may have faint dusky bars especially juveniles. Body elongate, depth max 2.8-3.3 in SL. Preopercle lower flange scaleless. Caudal fin forked deeply and with long lobes; pectoral fins do not reach beyond level of anus. (Ref. 90102)

Biología     Glosario (por ej. epibenthic)

Prefers coralline areas (Ref. 30573). Migrates to specific sandy areas near outer reef edge to spawn in late afternoons during full moon. Feeds on small benthic organisms living on sandy bottoms (Ref. 3409, 48635). In Palau, migrates to specific sandy spots near the outer reef edge to spawn in late afternoons around full moon (Ref. 37816). Forms schools. Feeds on small invertebrates found in the sand. Marketed fresh (Ref. 12915).

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador : Woodland, David J. | Colaboradores

Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 02 March 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Pesquerías: comercial
FAO(pesquerías: producción; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 24.9 - 29.3, mean 28.5 (based on 3192 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00553 - 0.01726), b=3.01 (2.87 - 3.15), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Nivel trófico (Ref. 69278):  3.5   ±0.37 se; based on food items.
Resiliencia (Ref. 120179):  Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (27 of 100).
Climate Vulnerability (Ref. 125649):  High to very high vulnerability (70 of 100).
Price category (Ref. 80766):   Medium.