Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Carangidae
(Jacks and pompanos) > Caranginae
Etymology: Megalaspis: Greek, megas, megalos = great + Greek, aspis,-idos = shield (Ref. 45335). More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; reef-associated; depth range 20 - 100 m (Ref. 28016). Tropical; 47°N - 22°S, 40°E - 156°E (Ref. 54577)
Indo-West Pacific: East Africa to Japan and Australia.
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)
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. 119314)
CITES (Ref. 115941)
Threat to humans
Fisheries: highly commercial
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 23.5 - 28.6, mean 27.5 (based on 707 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.01157 - 0.01435), b=2.94 (2.91 - 2.97), in cm Total Length, based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.9 ±0.64 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.13(?)-0.35; Fec=146,400).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 20 stock assessments.
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .