HomeFish encyclopediaRay-finned fishesEels and MoraysMud eelsPacific mud eel Pacific mud eel (Pythonichthys asodes) Scientific name: Pythonichthys asodes Rosenblatt & Rubinoff, 1972 The Pacific mud eel (Pythonichthys asodes) is a marine fish of the family Heterenchelyidae. Native range: Eastern Central Pacific, Panama. Species factsScientific namePythonichthys asodesFamilyHeterenchelyidae (Mud eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length47.2Depth range17 m (56 ft)EnvironmentMarine; demersal; depth range ? - 17 mClimateTropicalDistributionEastern Central Pacific: Panama.Conservation status (IUCN)Least Concern (LC)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