Ryukyu Islands country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Iwatsuki, Y., S. Kimura, H. Kishimoto and T. Yoshino, 1996
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum: Okinawa-ken-gyoren Mkt. Okinawa, MUFS 10186, 10428-10432. Okinawa I., MUFS 10198 (Ref. 13682).
National Checklist:
Country Information: ttp://en.wikipedia.org/wiki/Ryukyu_Island
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Iwatsuki, Y., S. Kimura, H. Kishimoto and T. Yoshino, 1996
National Database:

Common names from other countries

Blanche fil, Threadfin silverbelly, Filamentous mojarra, ... more

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | 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 Ökologie

seewasser; süßwasser; brackwasser demersal; amphidrom (Ref. 51243); tiefenbereich 1 - 50 m (Ref. 4372). Tropical; 26°C - 29°C (Ref. 4959); 32°N - 35°S, 25°E - 171°E

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Indo-West Pacific: East Africa and Madagascar to Japan and Australia; New Caledonia (Ref. 26587) and Vanuatu (Ref. 13300). Enters rivers and lakes in Madagascar and the east coast of Africa. Not in the Middle East (Ref. 103159).

Length at first maturity / Size / Gewicht / Alter

Maturity: L_m 19.0 range ? - ? cm
Max length : 39.0 cm TL Männchen/unbestimmt; (Ref. 116875); common length : 15.0 cm SL Männchen/unbestimmt; (Ref. 4967)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 9; Rückenflossenweichstrahlen (insgesamt) : 10 - 11; Afterflossenstacheln: 2 - 3; Afterflossenweichstrahlen: 7 - 8.

Adults are coastal inhabitants found on soft bottoms (Ref. 44894), over sandy substrate (Ref. 12693). Juveniles are found in brackish mangrove estuaries, sometimes enter fresh water (Ref. 2847, 44894), lakes (Ref. 4323), tidal creeks (Ref. 44894) and lower freshwater reaches of rivers (Ref. 12915). Feed on small crustaceans, polychaetes and forams on sand or muddy-sand bottoms (Ref. 12915), worms and insect larvae (Ref. 12693). Length at first reproduction was reported to be around 12 cm SL, for a population in a South African estuary (D. Woodland, pers.comm. 07/13). Salted or made into fish sauce.

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

Juveniles enter estuaries and mangrove areas at 1 cm SL and stay until they reach maturity, at which stage they move out to sea (Ref. 36558).

Hauptreferenz Upload your references | Referenzen | Koordinator : Woodland, David J. | Partner

Woodland, D.J., 1984. Gerreidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean fishing area 51. Vol. 2. [pag. var.]. FAO, Rome. (Ref. 3409)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 11 July 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: weniger kommerziell

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 24.8 - 29.1, mean 28.2 (based on 1220 cells).

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

Bayesian length-weight: a=0.01230 (0.01004 - 0.01507), b=3.05 (3.01 - 3.09), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.2 se; based on diet studies.

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (K=0.7).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (32 of 100).

Preiskategorie (Ref. 80766): Medium.

Gerres filamentosus Cuvier, 1829