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Eupercaria/misc (Various families in series Eupercaria) >
Gerreidae (Mojarras)
Etymology: Gerres: Latin, gerres = a kind of anchovies; cited by Plinius.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien; brak water rifbewoner; diepte 0 - 20 m (Ref. 11441). Tropical; 36°N - 35°S, 25°E - 174°W
Indo-Pacific: Red Sea to South Africa, east to Marshall and Samoa islands; north to the Ryukyus and south to the Queensland, Australia (Great Barrier Reef) and New Caledonia.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm ?, range 22 - ? cm
Max length : 30.0 cm TL mannelijk / geslacht onbekend; (Ref. 4323); common length : 20.0 cm SL mannelijk / geslacht onbekend; (Ref. 37816)
Dorsale stekels (totaal) : 9; Dorsale zachte stralen (totaal) : 10; Anale stekels: 3; Anale zachte stralen: 7. Body silvery with 6-8 irregular, faint dusky oblique and vertical bands dorsolaterally and ventrolaterally (usually more apparent in young stressed or preserved specimens. U-shaped premaxilla groove mostly without scales (tiny scales anteriorly in specimens over 13 cm SL). Posterior margin of maxillary beyond a vertical through anterior margin of pupil. Supraneural bones 3. Spinous dorsal fin with an indistinct dusky patch (2nd-6th spines) and very narrow dusky distal margins on upper membranes between spines. Scales between 5th dorsal fin spine and lateral line 3-4, usually 3.5. Pelvic fin when fresh is semi-transparent or dull yellow color with an indistinct dusky band and dull white distal margin posteriorly (Ref. 35850); pectoral fins reaches beyond level of anus; caudal fin forked deeply and with long lobes (Ref. 90102).
Found along the coast, saltwater lagoons, and estuaries (Ref. 5213). Also in sand bottoms in sheltered waters near reefs (Ref. 90102). Occurs singly or in groups (Ref. 9710). Feeds on small organisms living on sandy bottoms. Utilized as fish meal and duck food. Sold fresh in markets.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Iwatsuki, Y., S. Kimura and T. Yoshino, 1999. Redescriptions of Gerres baconensis (Evermann & Seale, 1907), G. equulus Temminck & Schlegel, 1844 and G. oyena (Forsskål, 1775), included in the "G. oyena complex", with notes on other related species (Perciformes: Gerreidae). Ichthyol. Res. 46(4):377-395. (Ref. 35850)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel
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Estimates based on models
Preferred temperature (Ref.
123201): 25.2 - 29.3, mean 28.5 °C (based on 3352 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00698 - 0.01722), b=3.09 (2.97 - 3.21), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 2.7 ±0.24 se; based on food items.
Generation time: 1.0 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Weerstandsvermogen (Ref.
120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Prior r = 1.19, 95% CL = 0.79 - 1.79, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
Climate Vulnerability (Ref.
125649): High vulnerability (63 of 100).
Nutrients (Ref.
124155): Calcium = 85.5 [43.0, 156.5] mg/100g; Iron = 0.796 [0.382, 1.420] mg/100g; Protein = 19.4 [17.4, 21.4] %; Omega3 = 0.135 [0.074, 0.243] g/100g; Selenium = 32.4 [17.9, 64.0] μg/100g; VitaminA = 38 [10, 133] μg/100g; Zinc = 1.87 [1.23, 2.68] mg/100g (wet weight);
