Common Name
Koefoed's Smoothhead
Year Described
Günther, 1887
Identification
Dorsal Fin: 12-16
Anal Fin: 9-13
Pectoral Fin: 11-12
Pelvic Fin: 7-9
Transverse Scale Rows: 40-43
Gill Rakers: 20-23 (total on first arch)
Branchiostegal Rays: 8
Body moderately elongate and slender, with a large head. Eyes smaller than snout length. Teeth present in a single row in upper and lower jaws. Rear margin of jaw extends to the posterior margin of orbit. Two supramaxilla above maxilla. Dorsal fin origin anterior to anal fin origin. Pectoral fins fairly large. Scales absent on head. Body scales moderate.
Color
Uniformly dark brown.
Size
Maximum size to 40cm SL.
Habitat
Benthopelagic from 2,500-5,850m.
Range
Gulf of Mexico
References
McEachran, J.D. and J.D. Fechhelm. 1998. Fishes of the Gulf of Mexico. Volume 1: Myxiniformes to Gasterosteiformes. University of Texas Press, Austin. i-viii + 1-1112.
Whitehead, P.J.P. , M.-L. Bauchot, J.-C. Hureau, J.G. Nielsen and E. Tortonese. 1986. Fishes of the North-eastern Atlantic and the Mediterranean. Vol. I-III. UNESCO. Fishes of the North-eastern Atlantic and the Mediterranean. http://species-identification.org.
Other Notes
Also in the literature under the synonym Bathytroctes (Bellocia) koefoedi (Parr, 1951).