HomeMarine aquarium fishWrassesSingapore parrotfish Singapore parrotfish (Scarus prasiognathos) Scientific name: Scarus prasiognathos Valenciennes, 1840 The Singapore parrotfish (Scarus prasiognathos) is a marine fish of the family Scaridae. BiologyDorsal spines (total): 9; Dorsal soft rays (total): 10; Anal spines: 3; Anal soft rays: 9. Scales large. Median predorsal scales 6; 3 scale rows on cheek, with 1-3 scales in ventral row. Caudal fins emarginate in initial phase to deeply concave in large terminal phase. Lips nearly covering dental plates; terminal males with 0-2 canines posteriorly on side of upper plate, none on lower. The initial phase closely resembles that of S. altipinnis. The terminal phase has the distinctive brilliant green throat and lacks the filamentous middle dorsal spine.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameScarus prasiognathosFamilyScaridae (Parrotfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length70.0Depth range1–15 m (3–49 ft)EnvironmentMarine; reef-associated; depth range 1 - 15 mClimateTropicalDistributionIndo-West Pacific: Maldives to New Ireland in Papua New Guinea, including Cocos-Keeling Islands, north to Ryukyu Islands and south to the Philippines, including Palau. This species is the terminal male of Scarus singaporensis. Possibly replaced by Scarus falcipinnis in the western Indian Ocean.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercial; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More wrassesGlobehead parrotfishScarus globicepsYellowfin parrotfishScarus flavipectoralisRegal parrotScarus dubiusYellowband parrotfishScarus schlegeliBleeker's parrotfishChlorurus bleekeriPalecheek parrotfishChlorurus japanensisSee all wrasses SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026