Unicorn Grenadier

Head large; the eyes moderately large; the snout moderately long and pointed, its anterolateral margin completely supported by bone. Head ridges strong, supraoccipital scute developed, several similar single-keeled scutes follow on the nape; the underside of the head naked, except for a small patch below the preopercle angle. Body scales covered with dagger-like spinules in 3 to 5 slightly divergent rows. Light organ small, fossa narrow, extending forward immediately before the anus. Overall brownish to swarthy, silvery ventrally; the fins dusky to blackish; the mouth and gill cavities blackish.

Dorsal spines (total): 2; Analspines: 0

fisheries: minor commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family

分布於西北太平洋區，由日本南方、中國東海外緣、臺灣東北部等海域。

個體較大型，軀幹部份可食。小型個體則作為下雜魚。

體型延長，側扁。鼻骨前側邊緣完全被骨支托；鼻窩被鱗；頭部稜脊發達具特化之強棘鱗。吻部腹面裸出。前鰓蓋骨腹側有鱗。發光器呈短桿狀，自肛門起點沿伸至兩腹鰭間。體被櫛鱗，棘刺尖長型，著於次生棘上，三至五列呈放射狀排列，中央鱗列稍擴大。口腔黑色，鰓膜黑色，各鰭略呈暗色。

主要棲息於350-600公尺深泥砂底質、水溫5-7℃的水域。深海底棲性魚類，以小型之多毛類、甲殼類及明蝦為主食。

The unicorn grenadier, Coelorinchus productus, is a species of rattail. This fish is found at depths of up to 600 metres (2,000 ft) in the waters around northern Taiwan, southern Japan and the East China Sea.

This fish grows to a length of about 31 cm (12 in) and is generally brown above, silvery below, with blackish fins and mouth and gill cavities. It can be distinguished from its congeners by its fairly long, pointed snout, teeth restricted to the central premaxilla and by only having a small ventral bioluminescent organ.