HomeMarine aquarium fishGobies, blennies & dottybacksBlackline fangblenny Blackline fangblenny (Meiacanthus nigrolineatus) Scientific name: Meiacanthus nigrolineatus Smith-Vaniz, 1969 The Blackline fangblenny (Meiacanthus nigrolineatus) is a marine fish of the family Blenniidae. Native range: Western Indian Ocean, Red Sea and the Gulf of Aden. BiologySwims above the bottom. Juveniles observed to mingle with apogonid fishes among Diadema spines as a means of protection against predators like Pterois. Feeds on zooplankton. Oviparous. Eggs are demersal and adhesive.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMeiacanthus nigrolineatusFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length9.5EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Indian Ocean: Red Sea and the Gulf of Aden.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesAquarium: 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 midasThree-lined blennyEcsenius trilineatusTalbot's blennyStanulus talbotiSee 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