Northern Gemfish

Lateral line branching below the 4th to the 5th spine of the first dorsal fin; the upper branch reaching the middle to end of the second dorsal-fin base; the lower branch running mid laterally. Body naked except for a large scaly patch extending around the posterior portion of the lower lateral line. The pelvic fin is represented by a single spine in smaller specimens but is entirely absent in specimens over 18 - 20 cm SL. Body color is grayish with silvery tint; the fins hyaline except for the black blotch on the fin membranes between the first and the third first dorsal spines.

Dorsal spines (total): 19 - 20; Dorsal soft rays (total): 14 - 17; Analspines: 2; Analsoft rays: 12 - 15; Vertebrae: 34

Feeds on fishes, crustaceans, and cephalopods (Ref. 5213, 9784).

Feeds on fishes, crustaceans, and cephalopods (Ref. 5213, 9784). Utilized as a food fish food (Ref. 4537).

fisheries: commercial

分布於印度-西太平洋區，由非洲東部外海至菲律賓，北至日本南部，南至澳洲。台灣南部及東北部有產。

一般為底拖網、延繩釣或鮪釣之意外漁獲物，全世界之年產量在1,000-10,000公噸間。食用魚。

體延長而略側扁，背、腹輪廓呈弧形，尾柄無稜脊；體長約為體高之5-6倍。頭中大。吻尖突。口裂大，平直；下頜突出於上頜；上下頜具尖銳之犬齒，具鋤骨齒。側線二條，上側線沿背緣延伸至第二背鰭下方，下側線與上側線連接於第IV-V棘之下方，陡降後約略直行於體側中部。第一背鰭略高，具棘XVIII-XIX；第二背鰭硬棘I， 軟條14-17，離鰭2；臀鰭硬棘I， 軟條12-15，離鰭2；腹鰭退化，具I棘，成長後消失；尾鰭深叉。體灰綠色而略帶銀光；背鰭第I-III硬棘間具黑斑；尾鰭黑褐色；餘鰭淡灰黑或淡色。

近海大洋性中底層洄游魚種，一般棲息深度在135-540公尺以上之大陸棚陡坡。獨游性。具有於夜間遷移至中層水域之習性。以甲殼類、頭足類及各種魚類等為食。

Feeds on fishes, crustaceans, and cephalopods (Ref. 5213, 9784). Consumed as food (Ref. 4537).

Known from seamounts and knolls