Thumbprint emperor (Lethrinus harak)

Scientific name: Lethrinus harak Forssk?l, 1775

Thumbprint emperor (Lethrinus harak)

The Thumbprint emperor (Lethrinus harak) is a brackish-water fish of the family Lethrinidae. Native range: Indo-West Pacific, Red Sea and East Africa to Samoa, north to southern Japan, south to northeastern Australia.

Biology

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal 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.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Lethrinus harak
Family
Lethrinidae (Emperors or scavengers)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
50.0
Common length
30.0
Depth range
20 m (66 ft)
Environment
Marine; brackish; reef-associated; non-migratory; depth range ? - 20 m
Climate
Tropical
Distribution
Indo-West Pacific: Red Sea and East Africa to Samoa, north to southern Japan, south to northeastern Australia.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: commercial
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.45-0.49; tmax=15)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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