Garman'S Lanternfish

Dorsal spines (total): 0; Dorsal soft rays (total): 15 - 16; Analspines: 0; Analsoft rays: 14 - 17

Meso- and benthopelagic (Ref. 58302). Pseudoceanic, at 325-750 m by day and nyctoepipelagic at surface to 125 m at night (with maximum abundance at 100 m) (Ref. 4479). Lipid content is 8.7 % in fresh body weight and wax ester is 1.7 in total lipids (Ref. 9193). Often appears with sergestid shrimp Sergia spp., marine hatchetfishes Argyropelecus spp. and Polyipnus spp. (Ref 39633).Specimens reach sexual maturity at a length of 4 cm (Ref. 47377).

Diaphus garmani

This species, taken only with the Engle trawl, is represented in the Ocean Acre collections by two specimens 27 and 31 mm. It is moderate in size, growing to about 60 mm and maturing at about 40 mm (Nafpaktitis, 1968). Most Atlantic captures are from the Carribbean Sea and Amazonian Province (Nafpaktitis, 1968; Nafpaktitis et al., 1977). The species also is known from the Indian and Pacific oceans (Nafpaktitis, 1968, Bradbury et al., 1971; Hartmann and Clarke, 1975).

分布於世界三大洋熱帶及亞熱帶海域。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，後部略細。頭中等大。吻短，鈍圓。眼大。口大，上頜骨狹長而延伸至前鰓蓋後緣，末端不擴大；上下頜、鋤骨、腭骨均具齒帶。體被大而薄圓鱗，易脫落；側線平直。背鰭單一，位於體中部，具軟條13-15(通常為14)，後部另具一脂鰭；臀鰭基底略等於背鰭基底，具軟條14-17(通常為15)；胸鰭具軟條11-12；尾鰭叉形，尾鰭副鰭條柔軟。各部位之發光器位置於下：眶前發光器(Ant)無；鼻部背位發光器(Dn)及鼻部腹位發光器(Vn)在鼻器和眶前緣之間處相連，DN的大小隨生長和性別而有變異；眶下位發光器(So)無；鰓蓋位發光器(Op)2個，位於前鰓蓋後緣下方，Op1明顯較Op2小，上下相接近；鰓被架位發光器(Br)3個；胸鰭上方發光器(PLO)，位於側線與胸鰭基部中間或略近於側線，其下方有一大於PLO約3-4倍的發光鱗；胸鰭下方發光器(PVO)2個，兩者與PO1成一斜線；胸部發光器(PO)5個，PO4位置昇高，與PVO2在一水平線上；腹部發光器(VO)5個，VO3位置最高；腹鰭上位發光器(VLO)位於腹鰭和側線之中間，或略高些；臀鰭上方發光器(SAO)3個，三者排列呈直線或斜線狀，SAO1高於VO5；體後側位發光器(Pol)1個，在脂鰭下方，緊鄰側線下緣；臀鰭前部發光器(AOa)6-8個，AOa1位置昇高，但不超過SAO2，最後一個亦昇高，六者排列呈淺弧形；臀鰭後部發光器(AOp)4-6個，沿尾柄腹側水平狀排列，最後一個不昇高；尾鰭前位發光器(Prc)4個，四個依次昇高呈半弧形排列，Prc4在側線下方約發光器直徑的1-2倍處。尾部發光腺無。

大洋性中、底層巡游魚類，具日夜垂直分布習性，白天一般棲息於325-750公尺以上，晚上則上游至水深0-125公尺附近處覓食，以小蝦等甲殼類為食。

Diaphus garmani, the Garman's lanternfish, is a species of lanternfish found worldwide.

Pseudoceanic. Found between 325-750 m during the day, nyctoepipelagic at surface to 125 m with maximum abundance at 100 m. Sexually mature from about 40 mm. Lipid content is 8.7 % in fresh body weight and wax ester is 1.7 in total lipids (Ref. 9193).

Western Atlantic: west of 30°W between 41.8°N and 10°S.

Pseudoceanic, at 325-750 m by day and nyctoepipelagic at surface to 125 m at night (with maximum abundance at 100 m).

nektonic