Herwigia kreffti

Author: Nielsen and Larsen, 1970

Herwigia kreffti Nielsen and Larsen, 1970

Status in World Register of Marine Species:
Accepted name: Herwigia kreffti (Nielsen and Larsen, 1970) (updated 2009-06-25)

Diagnosis: body moderately elongate, head about one-third of body length. Snout shorter than eye; hind border of eye well before midpoint of head; tip of upper jaw reaching well beyond eye; fine teeth in upper jaw none in lower jaw. Pyloric caeca 9-10. Dorsal fin well behind midpoint of body but its origin well before anal fin origin; dorsal finrays 15-
18, pectoral finrays 16-18, pelvic finrays 7-8 (plus a splint bone), anal fin origin below about middle of dorsal fin base, with 13-15 finrays. Colour: dark brownish- black. Size: to at least 38 cm.

Habitat: bathypelagic, from about 1,600 to 2,700 m. Food: no data. Reproduction: ovarian eggs relatively large (to 3.3 mm in diameter).

Distribution: scattered records north from the Azores to about 53° N. Elsewhere, southward to 21° 35' S, also Indian Ocean and in Pacific off Hawaii.

Eggs, etc. Nielsen, 1972b: 33 (ovarial eggs).