HomeMarine aquarium fishGobies, blennies & dottybacksComet Comet (Calloplesiops altivelis) Scientific name: Calloplesiops altivelis Steindachner, 1903 The Comet (Calloplesiops altivelis) 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 Tonga and the Line Islands. Comet care at a glanceTemperature24–26°C (75–79°F) BiologyDorsal spines (total): 11; Dorsal soft rays (total): 8-9; Anal spines: 3; Anal soft rays: 9. Head and body brownish black with small pale blue spots; vertical and pelvic fins dark orange-brown, with many small blue spots; blue ringed black ocellus above base of last 3 dorsal rays; yellow spots at base of upper caudal rays; pectoral rays bright yellow, fin membrane transparent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCalloplesiops altivelisFamilyPlesiopidae (Roundheads)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Depth range3–50 m (10–164 ft)EnvironmentMarine; reef-associated; depth range 3 - 50 m, usually 3 - 45 mClimateTropicalDistributionIndo-Pacific: Red Sea and East Africa to Tonga and the Line Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: public aquariumsResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec = 1,000) More gobies, blennies & dottybacksYellowhead jawfishOpistognathus aurifronsFire gobyNemateleotris magnificaYellow prawn-gobyCryptocentrus cinctusPersian blennyEcsenius midasFine-scaled dottybackLubbockichthys multisquamatusPale dottybackPseudochromis pesiSee 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