Eptatretus menezesi

Common Name

Brazilian Hagfish

Year Described

Mincarone, 2000


Slime Pores
Prebranchial: 13-17
Branchial: 6-8
Trunk: 48-55
Tail: 14-18
Total: 86-94

Anterior unicusps: 10-12
Posterior unicusps: 9-12
Total cusps: 52-60
Tooth formula: 3/3

Body anguilliform and cylindrical. There are seven gill openings. Gill openings linear. Branchial ducts tapering to a smaller size posteriorly. Ventral finfold poorly developed. Caudal finfold well developed.


Body in life medium brown with pale spots around body pores. Caudal finfold darker brown. Whitish mouth, barbels, eyespots, and ventral finfold margin.


Adults range from 39-74cm TL. Maximum size to 90cm TL.


Captured on continental slope from 250-530m.


Known from off southeastern Brazil.


Mincarone, M. M. 2000. Eptatretus menezesi, a new species of hagfish (Agnatha, Myxinidae) from Brazil. Bulletin of Marine Science v. 67 (2): 815-819.

Mincarone, M. M. 2007. Revisao Taxonomica da Familia Myxinidae Rafinesque, 1814 (Myxiniformes). Tese de Doutorado, Porto Alegre, RS, Brasil.

Other Notes

The only other known species of seven gilled hagfish from the western Atlantic is Eptatretus caribbeaus, which has fewer total slime pores (79-85) and fewer tail pores (11-13). An undescribed seven-gilled species from the Bahamas has a different tooth formula of 3/2 (Mincarone, 2000).