HomeMarine aquarium fishGobies, blennies & dottybacksCrimsontip longfin Crimsontip longfin (Plesiops coeruleolineatus) Scientific name: Plesiops coeruleolineatus R?ppell, 1835 The Crimsontip longfin (Plesiops coeruleolineatus) is a marine fish of the family Plesiopidae. In the aquarium it needs water at 24–26°C (75–79°F). Native range: Indo-Pacific, Red Sea and East Africa to Japan and Oceania. Crimsontip longfin care at a glanceTemperature24–26°C (75–79°F) BiologyDorsal spines (total): 10 - 12; Dorsal soft rays (total): 6-8; Anal spines: 3; Anal soft rays: 8. Color variable; body generally black or brown; 2 dark stripes behind eye; dorsal spines orange distally; bluish stripe along basal part of dorsal fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlesiops coeruleolineatusFamilyPlesiopidae (Roundheads)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length10.0Depth range1–23 m (3–75 ft)EnvironmentMarine; reef-associated; depth range 1 - 23 m, usually 3 - 23 mClimateTropicalDistributionIndo-Pacific: Red Sea and East Africa to Japan and Oceania.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More gobies, blennies & dottybacksPersian blennyEcsenius midasYellow prawn-gobyCryptocentrus cinctusFire gobyNemateleotris magnificaYellowhead jawfishOpistognathus aurifronsDutoitiPseudochromis dutoitiRobust jawfishOpistognathus muscatensisSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026