HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsSpongy rat tail Spongy rat tail (Bathygadus spongiceps) Scientific name: Bathygadus spongiceps Gilbert & Hubbs, 1920 The Spongy rat tail (Bathygadus spongiceps) is a marine fish of the family Macrouridae. Native range: Indo-Pacific. BiologyA benthic species found on the continental slope.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBathygadus spongicepsFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length27.0Depth range1207–1463 m (3960–4800 ft)EnvironmentMarine; bathypelagic; depth range 1207 - 1463 mClimateDeep-waterDistributionIndo-Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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