Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Carangidae
(Jacks and pompanos) > Caranginae
Etymology: Megalaspis: Greek, megas, megalos = great + Greek, aspis,-idos = shield (Ref. 45335).
Environment / Climate / Range
Marine; brackish; reef-associated; depth range 20 - 100 m (Ref. 28016). Tropical; 47°N - 22°S, 40°E - 156°E (Ref. 54577)
Length at first maturity / Size / Weight / Age
Maturity: Lm 22.0  range ? - ? cm
Max length : 80.0 cm TL male/unsexed; (Ref. 3287); common length : 45.0 cm TL male/unsexed; (Ref. 5450); max. published weight: 4.0 kg (Ref. 4883)
Indo-West Pacific: East Africa to Japan and Australia.
Adults are primarily oceanic, pelagic schooling species rarely seen on reefs (Ref. 48635, 90102). They feed mainly on fishes (Ref. 5213). Generally marketed fresh (Ref. 5284).
Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)
IUCN Red List Status (Ref. 90363)
CITES (Ref. 94142)
Threat to humans
Fisheries: highly commercial
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01413 (0.01205 - 0.01656), b=2.93 (2.88 - 2.98), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 4.4 ±0.8 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.13(?)-0.35;).
Vulnerability (Ref. 59153
): Moderate vulnerability (36 of 100) .