HomeMarine aquarium fishWrassesSmalltail wrasse Smalltail wrasse (Pseudojuloides cerasinus) Scientific name: Pseudojuloides cerasinus Snyder, 1904 The Smalltail wrasse (Pseudojuloides cerasinus) is a marine fish of the family Labridae. Native range: Indo-Pacific, East Africa to the Hawaiian, Society, and Austral islands, north to the Izu Islands, south to Lord Howe Island. BiologyDorsal spines (total): 9; Dorsal soft rays (total): 11; Anal spines: 3; Anal soft rays: 12; Vertebrae: 15. Body color and pigmentation of males and females differ; geographic variation exists. In life, males olive green dorsally, bluish ventrally with double colored stripe (bright blue and yellow) on body. 8-11 small median predorsal scales; 5-8 suborbital pores from below anterior edge to midposterior level of orbit; 10-13 pores along free margin of opercle; 3 pores in front of anterior nostril. Caudal fins of some individuals slightly double emarginate. The primary phase of P. cerasinus is a salmon pink with yellowish fins. Juveniles collected in Sydney and reared to adults in an aquarium were observed to change from pink to the male pattern in about one week.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudojuloides cerasinusFamilyLabridae (Wrasses)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.3Depth range2–61 m (7–200 ft)EnvironmentMarine; reef-associated; depth range 2 - 61 m, usually 21 - ? mClimateTropicalDistributionIndo-Pacific: East Africa to the Hawaiian, Society, and Austral islands, north to the Izu Islands, south to Lord Howe Island.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More wrassesRedeye wrassePseudojuloides erythropsLong green wrassePseudojuloides elongatusCanary wrasseHalichoeres chrysusCheekspot wrasseHalichoeres melasmapomusArgus wrasseHalichoeres argusTail-spot wrasseHalichoeres melanurusSee 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