Actinopterygii (ray-finned fishes) > Clupeiformes
(Herrings) > Clupeidae
(Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Amblygaster: Greek, amblys = darkness + Greek, gaster = stomach (Ref. 45335).
Environment / Climate / Range
Marine; reef-associated; depth range 10 - 75 m (Ref. 12260). Tropical; 35°N - 28°S, 31°E - 178°W (Ref. 188)
Length at first maturity / Size / Weight / Age
Maturity: Lm 15.0  range ? - ? cm
Max length : 27.0 cm SL male/unsexed; (Ref. 54980); common length : 20.0 cm SL male/unsexed; (Ref. 188); max. reported age: 8 years (Ref. 1488)
soft rays: 12 - 23. Scutes not prominent. Distinguished from A. clupeoides and A. leiogaster by the presence of a series of 10 to 20 gold (in life) or black (on preservation) spots down the flank (but sometimes missing) and more lower gill rakers; from Sardinops species by the absence of a bony radiating striae on its operculum; from Sardinella species by its fewer pelvic fin rays and lower gill rakers.
Indo-West Pacific: Red Sea and Mozambique to the Philippines, north to Taiwan and Okinawa (Japan), south to New Guinea, the Arafura Sea (Ref. 9819), northern Australia, and Fiji.
Pelagic (Ref. 53568). A schooling species occurring in coastal waters and lagoons. In Panggang Island, Indonesia it was recorded in temperatures of 28.5-29.8°C and salinities of 31.6-32.3 ppt (Ref. 823). Feeds mainly on copepods, nauplii and zoea larvae, larval bivalves and gastropods, as well as Peridinium and Ceratium. 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. (Ref. 188)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: commercial; bait: usually
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00719 - 0.01007), b=3.04 (2.99 - 3.09), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.3 ±0.4 se; Based on diet studies.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (K=0.37-3.74; tm=1; tmax=8; Fec > 10,000).
Vulnerability (Ref. 59153
): Low vulnerability (17 of 100) .