Monognathus boehlkei is a deep-sea eel inhabiting all oceans at depths up to 2,000 metres (6,600 ft).

[2][3] The species is characterized by a distinctive high number of anal fin rays and a short, blunt head with a straight lower jaw.

It is unpigmented or transparent, with five or six spots of pigment along the body.

[2] Monognathus boehlkei is found mainly in the eastern and western Atlantic ocean.

[2] The fish is named in honor of James E. Böhlke (1930–1982),of the Academy of Natural Sciences of Philadelphia, because of his valuable contribution to the study of the apodal fishes.