Family Derichthyidae 83longneck eels Marine Atlantic Indian and Pacific

Series of parallel striations on the head forming part of a sensory system; branchial region not expanded, with body behind gill opening somewhat compressed; pectoral fins present; dorsal fin origin behind tip of pectoral fin; anus well behind midlength; lateral line virtually complete; vertebrae 125-160; adults mesopelagic to bathypelagic. Maximum length about 60 cm.

Two genera, the monotypic Derichthys with a short snout and Nessorhamphus containing two species with relatively long snouts (C. H. Robins in Böhlke, 1989:420-31).

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