The '''''CaribbeanPythonichthys mud eelsanguineus'''''(Panturichthys sanguineus) is an [[eel]] in the family [[Heterenchelyidae]] (mud eels).<ref name="Fishbase">[http://fishbase.mnhn.fr/summary/Pythonichthys-sanguineus.html ''Pythonichthys sanguineus''] {{webarchive|url=https://archive.today/20130412200410/http://fishbase.mnhn.fr/summary/Pythonichthys-sanguineus.html |date=2013-04-12 }} at www.fishbase.org.</ref> It was described by [[Felipe Poey]] in 1868.<ref name="Poey, 1868">Poey, F., 1867-68 [ref. 14079] ''Monografia de las Morenas cubanas.'' Repertorio Fisico-Natural de la Isla de Cuba v. 2: 245-268, 2 pls.</ref> It is a [[tropical]], [[Marine biology|marine]] eel which is known from [[Cuba]], [[Puerto Rico]], and [[Suriname]], in the western central [[Atlantic Ocean]]. It leads a [[benthic]] lifestyle, dwelling in [[reef]]s or rocky regions at a maximum depth of 37 metres. Males can reach a maximum [[total length]] of 41.9 centimetres.<ref name="Fishbase"/>
