Teleostei (teleosts) >
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
Ecology
Marine; brackish; demersal; depth range 3 - 40 m (Ref. 9002). Subtropical
Indo-West Pacific: Australia, but may occur in southern New Guinea; also reported in New Caledonia..
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 20.0 cm TL male/unsexed; (Ref. 9002)
Dorsal spines (total): 9 - 10; Dorsal soft rays (total): 9 - 11; Anal spines: 3; Anal soft rays: 7. This species is distinguished by having the following characters: body oval, greatly compressed and with moderately deep caudal peduncle; moderate-sized and weakly attached scales covering the body and extended over the head; lateral line gradually curved, following contour of back, extending onto caudal fin with several scales; small mouth but greatly protractile; numerous villiform teeth on jaws; dorsal fin spines elevated anteriorly, notched over remaining spines, followed by longer, sub-equal rays; anal fin short-based, similar to and opposite posterior part of the dorsal fin; caudal fin deeply forked; pectoral fins pointed with long upper rays, reaching the anal fin. Colour of adults shiny with dark-tipped dorsal fin; juveniles olive above with some indistinct dark blotching (Ref. 9002).
Found in estuaries, harbors, to fairly deep water along the shores (Ref. 30392); strongly affected by freshwater; and reported to congregate in schools (Ref. 58476).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
Threat to humans
Harmless
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Estimates based on models
Preferred temperature (Ref.
123201): 20.6 - 28.8, mean 27.5 °C (based on 494 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00853 - 0.02565), b=3.05 (2.91 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
Nutrients (Ref.
124155): Calcium = 153 [76, 313] mg/100g; Iron = 1.27 [0.65, 2.38] mg/100g; Protein = 19.4 [17.5, 21.2] %; Omega3 = 0.409 [0.225, 0.743] g/100g; Selenium = 19.5 [9.7, 37.9] μg/100g; VitaminA = 12.8 [4.0, 38.1] μg/100g; Zinc = 1.14 [0.77, 1.63] mg/100g (wet weight);
