Uncommon in depths shallower than 400 m. Frequents waters of 5-7°C. Polychaetes and euphausiids compose 30-60% of the diet of specimens from Japan, and prawns of minor importance.
Dorsal spines (total): 2; Anal spines: 0. Snout short, blunt; terminal and lateral scutes large, blunt; undersides of snout, mandible, most of the suborbital, and part of the lower margin of the preopercle naked. Body scales with sharp, slender spinules in 4 to 16 parallel rows. Pyloric caeca 25 to 28. Overall color is brown; abdomen bluish; gill membranes blackish; fins dusky, first dorsal fin blackish distally; oral and branchial linings blackish.: elongated; Cross section: oval.
Behavioural data for Japanese pugnose grenadier is currently being reviewed.
Marine; bathydemersal; non-migratory; depth range 200 - 720 m . Deep-water; 37°N - 23°N, 124°E - 140°E Northwest Pacific: southern Japan and the East China Sea.
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