Panturichthys isognathus
 Panturichthys isognathus is an eel in the family Heterenchelyidae (mud eels). It was described by Max Poll in 1953. It is a tropical marine eel which is known from the Gulf of Guinea in the eastern Atlantic Ocean where it predominates south of the equator. It typically dwells at a depth range of 40-150 metres. Males can reach a maximum total length of 32.5 centimetres.