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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
Ecologia
marino; salmastro demersale; distribuzione batimetrica 2 - 3 m (Ref. 58476). Subtropical
Distribuzione
Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri
Northwest Pacific: likely to be endemic in Japan.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 16.9 cm SL maschio/sesso non determinato; (Ref. 58476)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 10; Raggi dorsali molli (totale) : 9; Spine anali: 3; Raggi anali molli: 7.
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).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Human uses
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 20.2 - 24.3, mean 21.6 °C (based on 90 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.00599 - 0.03330), b=3.04 (2.86 - 3.22), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
