HomeMarine aquarium fishGobies, blennies & dottybacksBluegill longfin Bluegill longfin (Plesiops corallicola) Scientific name: Plesiops corallicola Bleeker, 1853 The Bluegill longfin (Plesiops corallicola) 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, Madagascar to the Line Islands; north to southern Japan, south to the southern Great Barrier Reef and Tonga. Throughout Micronesia. Bluegill longfin care at a glanceTemperature24–26°C (75–79°F) BiologyDorsal spines (total): 7; Dorsal soft rays (total): 7; Anal spines: 3; Anal soft rays: 8. Coloration can vary from pale gray with black blotches and blue dots to an almost uniformly black except for the ever-present blue ocellus on the edge of its operculum.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlesiops corallicolaFamilyPlesiopidae (Roundheads)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length16.0Depth range1–23 m (3–75 ft)EnvironmentMarine; reef-associated; depth range 1 - 23 m, usually 1 - 10 mClimateTropicalDistributionIndo-Pacific: Madagascar to the Line Islands; north to southern Japan, south to the southern Great Barrier Reef and Tonga. Throughout Micronesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More gobies, blennies & dottybacksYellowhead jawfishOpistognathus aurifronsFire gobyNemateleotris magnificaYellow prawn-gobyCryptocentrus cinctusPersian blennyEcsenius midasNorthern blue devilParaplesiops poweriEastern blue devilParaplesiops bleekeriSee 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