|Common Atlantic Grenadier
All Nezumia — Anus surrounded by a broad margin of naked skin or far removed from anal fin. Branchiostegal rays 7. Teeth in lower jaw in a 2 or more rows or in a broad band. Fossa between bases of pelvic fins present or absent, not bean-shaped. Few or no scales on branchiostegal rays. Underside of snout usually with broad to narrow naked area above upper lip. Snout with or without a tubercular scale at tip, ridges of head with or without enlarged, coarsely spined scales. Total gill rakers on inner side of first arch 8-11, rarely 12;. Leading edge of snout not distinctly marked in black.
Unique Characters: First dorsal fin with a prominent black tip or membrane between serrated spinous ray and first branched ray. Pelvic-fin rays usually 7-9, rarely 10.First dorsal fin with a prominent black tip.
Marlin Spike Nezumia bairdii. First dorsal fin with a prominent black tip or membrane between serrated spinous ray and first branched ray. First dorsal fin with a black membrane between serrated spinous dorsal ray and first branched ray. Pelvic-fin rays 7.
Bluntsnout Grenadier Nezumia sclerorhynchus. First dorsal fin uniformly dusky or dark. Pelvic-fin rays 7-10.