Grenadier Identification Guide

Key identification features

• Oversized head tapering abruptly into a long, thin, whip-like tail with no distinct caudal fin
• Large eyes and a blunt or pointed snout depending on species
• Two dorsal fins: a short, tall first dorsal (often with one spiny ray) and a long, low second dorsal that runs into the tapering tail
• Anal fin similarly long and low, mirroring the second dorsal along the tail
• Coloration typically silvery-gray, brownish, or blackish, darkening toward the tail
• Rough, easily shed scales; body length dominated by the tail rather than the trunk

Common look-alikes

• Hake: has a normal, distinctly forked tail rather than a tapering whip-like point
• Eelpout: lacks the oversized head and rounded snout, with a more uniform body depth from head to tail
• Cusk-eel: smaller eyes and a more slender head, without the grenadier's abrupt head-to-tail taper

Where you'll see one

Grenadiers are among the most abundant fish on the deep ocean floor worldwide, typically found from 200 meters down to abyssal depths well beyond 2,000 meters. They hover just above soft sediment on continental slopes and seamounts, foraging in near-total darkness.