Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Lethrinidae
(Emperors or scavengers) > Lethrininae
Etymology: Lethrinus: Greek, lethrinia, a fish pertaining to genus Pagellus.
Environment / Climate / Range
Marine; brackish; reef-associated; non-migratory; depth range 5 - 30 m (Ref. 2295). Tropical; 28°N - 34°S
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 31 - 35 cm
Max length : 90.0 cm TL male/unsexed; (Ref. 2295); common length : 40.0 cm TL male/unsexed; (Ref. 9987); max. published weight: 9.6 kg (Ref. 9987); max. reported age: 22 years (Ref. 2290)
soft rays: 8. Snout moderately long. Cheek without scales. Body silvery, tan or yellowish in color, often with a series of 8 or 9 dark bars. Vertical bars may be absent in some individuals. Base of pectoral fin red. Occasionally a red streak is present, originating on the upper operculum, passing beneath the eye and on to the snout. Reddish lips. Fins pale or reddish, sometimes brilliant red on membranes near base of pelvic fin and between spinous rays of dorsal and anal fin. The base of scales often black.
Western Pacific: northern Australia (including Western Australia), New Caledonia, and the Ryukyu Islands. Occurrence records outside distributional range probably refer to Lethrinus olivaceus.
Inhabit coral reefs during daytime where they feed occasionally in sand and rubble areas between coral heads. At night, they move out over the sandy sea floor and forage actively. Usually occur in small schools. Feed mainly on crustaceans, echinoderms, mollusks and fish, with crabs and sea urchins predominating. Much of the information reported for this species was based on misidentifications and referred to L. olivaceous (see Ref. 2295). Marketed fresh or frozen (Ref. 9987).
Carpenter, K.E. and G.R. Allen, 1989. FAO Species Catalogue. Vol. 9. Emperor fishes and large-eye breams of the world (family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date. FAO Fish. Synop. 125(9):118 p. Rome: FAO.
IUCN Red List Status (Ref. 90363)
Threat to humans
Reports of ciguatera poisoning (Ref. 4690)
Fisheries: minor commercial; gamefish: yes
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01893 (-0.08243 - 0.12030), b=3.03 (2.96 - 3.10), based on LWR estimates for species & genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.5 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.1-0.4; tm=2-3; tmax=22).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (53 of 100) .