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Eupercaria/misc (Various families in series Eupercaria) >
Gerreidae (Mojarras)
Etymology: Gerres: Latin, gerres = a kind of anchovies; cited by Plinius.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser; brackwasser riff-verbunden; tiefenbereich 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.
Länge bei der ersten Reifung / Größe / Gewicht / Alter
Geschlechtsreife: Lm ?, range 22 - ? cm
Max length : 30.0 cm TL Männchen/unbestimmt; (Ref. 4323); common length : 20.0 cm SL Männchen/unbestimmt; (Ref. 37816)
Rückenflossenstacheln (insgesamt) : 9; Rückenflossenweichstrahlen (insgesamt) : 10; Afterflossenstacheln: 3; Afterflossenweichstrahlen: 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).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
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.
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: kommerziell
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Schätzungen auf der Grundlage von Modellen
Bevorzugte Temperatur (Ref.
123201): 25.2 - 29.3, mean 28.5 °C (based on 3352 cells).
Phylogenetischer Diversitätsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00874 - 0.01509), b=3.05 (3.01 - 3.09), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophische Ebene (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.
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (K=1.1;).
Prior r = 1.19, 95% CL = 0.79 - 1.79, Based on 1 data-limited stock assessment.
Anfälligkeit der Fischerei (Ref.
59153): Low vulnerability (20 of 100).
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Klimaanfälligkeit (Ref.
125649): High vulnerability (63 of 100).
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Nährstoffe (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);
