HomeFish encyclopediaRay-finned fishesPerch-like fishDottybacksLargespot eel blenny Largespot eel blenny (Congrogadus amplimaculatus) Scientific name: Congrogadus amplimaculatus Winterbottom, 1980 The Largespot eel blenny (Congrogadus amplimaculatus) is a marine fish of the family Pseudochromidae. Native range: Western Pacific, presently known only from the southern portion of the Gulf of Carpentaria. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 62-64; Anal spines: 0; Anal soft rays: 52 - 54; Vertebrae: 66 - 69. Opercle with a dark ocellated spot. Gill membranes fused to the isthmus. Posterior otic sensory canal pore absent. Preopercular canal usually with 7 pores. Large spots arranged in three rows where dorsalmost and ventralmost rows extending distally on bases of dorsal and anal fin bases.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCongrogadus amplimaculatusFamilyPseudochromidae (Dottybacks)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.9EnvironmentMarine; demersalClimateTropicalDistributionWestern Pacific: presently known only from the southern portion of the Gulf of Carpentaria.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026