HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsMugura grenadier Mugura grenadier (Coelorinchus kishinouyei) Scientific name: Coelorinchus kishinouyei Jordan & Snyder, 1900 The Mugura grenadier (Coelorinchus kishinouyei) is a marine fish of the family Macrouridae. In the aquarium it needs water at 8–12°C (46–54°F). Native range: Northwest Pacific, southern Japan and Taiwan. Mugura grenadier care at a glanceTemperature8–12°C (46–54°F) BiologyDorsal spines (total): 2; Anal spines: 0. Snout slightly long and pointed, with broad triangular naked areas on the dorsal surface; the terminal scute small, poorly defined in larger individuals. Overall color is light brown with a large ocellated black blotch above and behind the pectoral fin bases; a fainter saddle just below the anterior end of the second dorsal fin extending 2 to 3 rows below the lateral line. The mouth cavity whitish; the gill cavity blackish; the fins generally dusky except for the blackish pelvic fins.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCoelorinchus kishinouyeiFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length36.0Depth range250–450 m (820–1476 ft)EnvironmentMarine; bathydemersal; non-migratory; depth range 250 - 450 mClimateDeep-waterDistributionNorthwest Pacific: southern Japan and Taiwan.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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