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 ? - 20 m (Ref. 9710). Tropical; 32°N - 22°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL male/unsexed; (Ref. 2295); common length : 30.0 cm TL male/unsexed; (Ref. 30573); max. reported age: 15 years (Ref. 2293)
soft rays: 8. Mouth slightly protractile; lips thick and fleshy. Inner base of pectorals densely covered with scales. Color is olive-green dorsally, paler ventrally; scales on back sometimes with white center. A large elliptical blotch, often broadly edged in yellow, on side directly below lateral line and centered at a vertical near the posterior tip of the pectoral fin. Sometimes light blue dots border the lower rime of the eye and around the nostrils. The pectoral, pelvic, dorsal and anal fins are white to pinkish. The caudal fin is orange or reddish. The vertical fins are sometimes lightly mottled or stripped.
Indo-West Pacific: Red Sea and East Africa to Samoa, north to southern Japan, south to northeastern Australia.
Found solitary or in small schools over shallow sandy, coral rubble, mangroves, lagoons, channel and seagrass areas inshore and adjacent to coral reefs. Feeds on polychaetes, crustaceans, mollusks, echinoderms and small fish. Reported to spawn throughout the year during the first five days of the lunar month in large aggregations in Palau. Marketed fresh (Ref. 171); flesh spoils rapidly (Ref. 4369).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 2295)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00783 - 0.01932), b=2.98 (2.85 - 3.11), based on LWR estimates for species & Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.5 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.45-0.49; tmax=15).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .