Actinopteri (ray-finned fishes) > Eupercaria/misc
(Various families in series Eupercaria) > Gerreidae
Etymology: Pentaprion: Greek, pente = five + Greek, prion = saw (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal; depth range 15 - 220 m (Ref. 12260). Tropical; 31°N - 28°S, 47°E - 154°E
Indo-West Pacific: western and southern coasts of India and off Sri Lanka to Indonesia, the Philippines and Ryukyu Islands, and south to the northern part of Australia (Ref. 3131).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 2872); common length : 10.0 cm TL male/unsexed; (Ref. 2872)
(total): 9 - 10;
soft rays: 12 - 13. Body is slender, with weakly attached silvery scales. The spines of the dorsal and anal fins longer than the rays; the pectoral fins long and pointed, reaching beyond the anal fin spines; the anal fin is long; the caudal fin lobes rounded.
Inhabits coastal waters. Forms large schools. Probably feeds on small benthic animals. Used for fish meal and duck food.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Woodland, D.J., 1984. Gerreidae. In W. Fischer and G. Bianchi (eds.) FAO species identification sheets for fishery purposes. Western Indian Ocean fishing area 51. Vol. 2. [pag. var.]. FAO, Rome. (Ref. 3409)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: minor commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 21.1 - 28.3, mean 26.6 °C (based on 974 cells).
Phylogenetic diversity index (Ref. 82804
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00922 - 0.01365), b=3.06 (3.01 - 3.11), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.2 se; based on diet studies.
Generation time: 1.2 (1.0 - 1.4) years. Estimated as median ln(3)/K based on 16 growth studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (K=0.70-1.80).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (27 of 100).
Nutrients (Ref. 124155
): Calcium = 365 [129, 1,130] mg/100g ; Iron = 1.1 [0.5, 3.0] mg/100g ; Protein = 17.6 [15.2, 19.8] % ; Omega3 = 0.689 [0.258, 1.881] g/100g ; Selenium = 61.4 [12.0, 187.6] μg/100g ; VitaminA = 11.2 [2.6, 59.2] μg/100g ; Zinc = 1.37 [0.68, 3.16] mg/100g (wet weight); based on nutrient studies.