HomeFish encyclopediaRay-finned fishesPerch-like fishCombtooth blenniesBluebelly blenny Bluebelly blenny (Ecsenius caeruliventris) Scientific name: Ecsenius caeruliventris Springer & Allen, 2004 The Bluebelly blenny (Ecsenius caeruliventris) is a marine fish of the family Blenniidae. Native range: Western Pacific, northeastern coast of Sulawesi, Indonesia. BiologyDiagnosis: This species of the Prooculis group has a body without alternating dark and pale stripes or distinct dark spots; there is a dark stripe extending posteriorly from orbital margin across head and variably for short distance onto body anteriorly. In life, the dark post-orbital stripe is bordered ventrally by bright white stripe; other bright markings on head, white with at most a very faint tinge of yellow; belly bluish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEcsenius caeruliventrisFamilyBlenniidae (Combtooth blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.4Depth range3–5 m (10–16 ft)EnvironmentMarine; demersal; depth range 3 - 5 mClimateTropicalDistributionWestern Pacific: northeastern coast of Sulawesi, Indonesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026