Brooch Lanternfish

Anal organs 10-11; mature males have large 3 to 5 translucent supracaudal gland and smaller infracaudal gland; mature females have small supracaudal gland and much smaller infracaudal patches (Ref. 39633).

Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.

Dorsal spines (total): 0; Dorsal soft rays (total): 12 - 14; Analspines: 0; Analsoft rays: 18 - 20; Vertebrae: 31 - 32

Benthopelagic and mesopelagic in slope and oceanic waters, but usually not high-oceanic. Occurs in the upper 200 m at night (Ref. 4066). Occasionally seen during dark nights on slopes that are near very deep water. Attracted by light like moths, becoming disoriented and darting frantically in all directions (Ref. 48635). Migrates in a diel pattern, residing during daytime at depths of extremely low oxygen levels (0.1 ml Oxygen/liter). Appeared to be opportunistic feeder that preys on a comparatively narrow food spectrum (Ref. 27395).

Benthopelagic and mesopelagic in slope and oceanic waters, but usually not high-oceanic. Occurs in the upper 200 m at night (Ref. 4066). Epipelagic in nearshore areas at 0-856 m (Ref. 58302). Occasionally seen during dark nights on slopes that are near very deep water. Attracted by light like moths, becoming disoriented and darting frantically in all directions (Ref. 48635).

fisheries: of potential interest

分布於北緯18°至南緯20°的印度洋和至南緯42°的Agulhas洋流及北緯21°至南緯10°的太平洋。臺灣則發現於西南部、東部及東沙群島等周邊水域。

一般以底拖網捕獲，不具食用經濟價值，通常做為下雜魚用。

體延長，側扁。頭中大。吻鈍尖。眼大。口頗大，上頜末端延伸至前鰓蓋後緣；上下頜、鋤骨、腭骨、中翼骨及舌面均具小齒。體被弱圓鱗，易脫落；側線平直。背鰭單一，位於體中部，具軟條12-14(通常為13)，後部另具一脂鰭；臀鰭基底明顯長於背鰭基底，具軟條18-20(通常為19)；尾鰭叉形，尾鰭副鰭條柔軟。各部位之發光器位置於下：鼻部背位發光器(Dn)小型；鼻部腹位發光器(Vn)無；眶下位發光器(So)無；鰓蓋位發光器(Op)2個，位於前鰓蓋後緣，其中的第2鰓蓋發光器(Op2)位於眼下緣縱線上；鰓被架位發光器(Br)3個；胸鰭上方發光器(PLO)位於側線與胸鰭基間，接近側線處；胸鰭下方發光器(PVO)2個，兩者均呈水平狀，與PO1不同在一直線上；胸部發光器(PO)5個，前4個幾呈水平狀，最後1個昇高；腹部發光器(VO)4個，VO2位於VO1及VO3之間的上方，在PVO及SAO1水平線的下方；腹鰭上位發光器(VLO)位於腹鰭和側線之間，接近側線處；臀鰭上方發光器(SAO)3個，三者排列呈鈍角狀，SAO1位於VO3和VO4間的上方，SAO3緊臨側線的下方；體後側位發光器(Pol)1個，位於脂鰭下方，緊臨側線；臀鰭前部發光器(AOa)6個，沿臀鰭基底水平狀排列；臀鰭後部發光器(AOp)4個，沿尾柄腹側狀排列，其間距大於發光器的直徑；尾鰭前位發光器(Prc)2個，Prc2在側線下方，其間距大於發光器的直徑；雄魚具3-5個透明的尾上腺(SUGL)及小的尾下腺(INGL)；雌魚有小的尾上腺(SUGL)及數個更小的瓦狀尾下腺(INGL)。

主要棲息於大陸棚徒坡及大洋的中、底層巡游魚類，具日夜垂直分布習性，常於晚上時上游至水深100-200公尺處。

Benthosema fibulatum is a species of fish in the family Myctophidae. It is a meso- to bathypelagic species found in the Indian and Pacific Oceans. It grows to 10 cm (3.9 in) total length.