Nemamyxine kreffti, also known as Krefft's hagfish, is a species of fish in the hagfish family Myxinidae. It is found in the south-western Atlantic Ocean from off Argentina and southern Brazil.
This species reaches a length of .
The fish is named in honor of German ichthyologist-herpetologist Gerhard Krefft (1912âÂÂ1993), Institute für Seefischerei in Hamburg.