Order Gadiformes Family Macrouridae(Grenadiers or rattails). Japanese grenadier Coelorinchus japonicus(Temminck & Schlegel, 1846). Max length: 75.0 cm TL Korean name/ggo-ri-min-tae(꼬리민태) Japanese name/Tôjin Chinese name/日本腔吻鱈 D1/spine 2 soft ray 8~10. D2/soft ray?; very many. A/soft ray?; very many. P1/17~21. P2/7
Distribution; Northwest Pacific/southeast and southern seas of Korea including Jeju Island, southern Japan and Taiwan. Possibly much wider in distribution. General; The body is compressed on the side and thin and long. The head is slightly depressed up and down. Eyes very large. The tail is string-shaped. The snout is long and the tip protrudes sharply, its anterolateral margin completely supported by bone. The length of the upper and lower jaws is about the same. The head has ridges that is prominently demarcated by stout, spiny scales The scales have spinous ridges. underside of head scaled. With teeth on both jaws, no teeth in palate but with teeth in the vomer. A straight ridge under the eye. 1 small barbel under the chin. The first spine of preoperculum very short and directed backwards and upwards. Light organ placed in between anus and pelvic fin. The tail is pointed and the caudal fin is degenerated. The number of scales above the lateral line at the beginning of the second dorsal fin is 4.5 to 6.0.
When alive, the overall color of the body is light grayish-yellow brown, the first dorsal fin is black, and the anal fin is dark. A small dark blotch on the base of the pectoral fin. No marks other than that. The inside of the mouth is gray and the inside of the gills is black. There may be cases when parts slightly darker than the back ground color of the body are scattered on the body side, so it may look like a pattern. Lives on the bottom of 300~1000m depth, spawns from March to April. Feeds on euphausiids, prawns, benthic fishes, isopods, and polychaetes. It is caught by the power line trawler, and is used a lot because it is larger than other congeners, mainly used for fish cakes.
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