Gerres akazakii, Japanese tenspined silver-biddy

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Gerres akazakii Iwatsuki, Kimura & Yoshino, 2007

Japanese tenspined silver-biddy
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Gerres akazakii   AquaMaps   Data sources: GBIF OBIS
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Image of Gerres akazakii (Japanese tenspined silver-biddy)
No image available for this species;
drawing shows typical species in Gerreidae.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Gerreidae (Mojarras)
Etymology: Gerres: Latin, gerres = a kind of anchovies; cited by Plinius;  akazakii: Named for Dr. Masato Akazaki..

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

marien; brak water demersaal; diepte 2 - 3 m (Ref. 58476). Subtropical

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Northwest Pacific: likely to be endemic in Japan.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 16.9 cm SL mannelijk / geslacht onbekend; (Ref. 58476)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 10; Dorsale zachte stralen (totaal): 9; Anale stekels 3; Anale zachte stralen: 7

Biologie     Verklarende woordenlijst (bv. epibenthic)

Known to inhabit the vicinity of river mouth basins, which may be considered strongly related to a minimum winter sea temperature of 16°C (less than 100 m depth). Specimens were collected in inlet basins, river mouth basins, or on shallow sandy bottoms strongly affected by freshwater from nearby river mouths. However, this species rarely occurs in the shallow coastal area with almost no freshwater effect. One specimen (MUFS 9584, 135 mm SL, 3 July 1993), had a clearly matured or water-hardened (transparent) egg, giving an indication of the spawning season of the species (Ref. 58476).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator : Woodland, David J. | Medewerkers

Iwatsuki, Y., S. Kimura and T. Yoshino, 2007. A review of the Gerres subfasciatus complex from the Indo-west Pacific, with three new species (Perciformes: Gerridae). Ichthyol. Res. 54(2):168-185. (Ref. 58476)

Status op de Rode Lijst van het IUCN (Ref. 130435)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Preferred temperature (Ref. 123201): 20.2 - 24.3, mean 21.6 °C (based on 90 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00602 - 0.03315), b=3.04 (2.86 - 3.22), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.3   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (11 of 100).