HomeFish encyclopediaRay-finned fishesPerch-like fishThreadfin breams, Whiptail breamsSlender threadfin bream Slender threadfin bream (Nemipterus zysron) Scientific name: Nemipterus zysron Bleeker, 1857 The Slender threadfin bream (Nemipterus zysron) is a marine fish of the family Nemipteridae. BiologyDorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 7. Suborbital spine absent. Preopercle with 3 transverse scale rows. Pectoral and pelvic fins short, reaching to just short of level of anus. A line drawn up from posterior edge of suborbital reaching the dorsal profile about 2 to 6 scale rows before origin of dorsal fin. Upper lobe of caudal fin produced into a long yellow trailing filament. Axillary scale present. Color: Upper body reddish, silvery below. Yellow stripes in front of eye through nostrils, and from upper lip to beneath eye. Less distinct golden stripe from behind eye to origin of lateral line.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNemipterus zysronFamilyNemipteridae (Threadfin breams, Whiptail breams)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Common length21.0Depth range10–125 m (33–410 ft)EnvironmentMarine; demersal; non-migratory; depth range 10 - 125 mClimateTropicalDistributionIndo-West Pacific: Red Sea and East Africa to the Indo-Malay Archipelago, north to Japan, south to northwestern Australia. This species has generally been treated under the name Nemipterus metopias by most previous authors.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026