Actinopterygii (ray-finned fishes) > Clupeiformes
(Herrings) > Clupeidae
(Herrings, shads, sardines, menhadens)
Etymology: Amblygaster: Greek, amblys = darkness + Greek, gaster = stomach (Ref. 45335). More on author: Bleeker.
Environment / Climate / Range
Marine; reef-associated; depth range 0 - 50 m (Ref. 188). Tropical; 17°N - 19°S, 75°E - 179°W (Ref. 188)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.0 cm SL male/unsexed; (Ref. 54980); common length : 15.0 cm SL male/unsexed; (Ref. 188)
soft rays: 12 - 23. Body moderately deep, belly rather rounded, scutes not prominent. Distinguished from A. sirm by the absence of spots along the flank (gold in life, black on preservation) and fewer lower gill rakers. Closely resembles A. leiogaster, which has more lower gill rakers. Round-bodied Sardinella species have i 8 pelvic fin rays and more than 100 lower gill rakers.
Indo-West Pacific: southern coasts of India, perhaps Bay of Bengal, and Indonesia eastward to Fiji. Reported from New Caledonia (Ref. 9070) and Tonga (Ref. 53797).
Forms schools in coastal waters. Feeds on copepods, Mysis and other elements in the zooplankton. Used as bait in the tuna fishery.
Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: commercial; bait: usually
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00000 (0.00000 - 0.00000), b=0.00000 (0.00000 - 0.00000), based on (Ref. 93245
Trophic Level (Ref. 69278
): 3.1 ±0.28 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Assuming Fec > 10,000).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (26 of 100) .