Trapezoid Torpedo

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).

Inhabits shelf edges to about 1000 m (Ref. 41299). Ovoviviparous (Ref. 50449). Maturity size of males at ca. 68 cm TL; birth size at ca. 20 cm TL (Ref. 114953). Reported to be infrequently captured as by-catch, but of no commercial importance (Ref. 94813).

fisheries: of no interest

分布於日本關東地方以南、臺灣東北部泥沙底海域。

偶由底拖網捕獲，非重要之經濟魚類。

體盤厚且圓滑。背鰭二枚；第一背鰭較第二背鰭長。第一背鰭起點超過腹鰭基部後端。第二背鰭的起點在腹鰭基部後端及尾鰭起點的中間。尾鰭長，眼睛小，出水口邊緣平滑。體盤長佔全長50.1%，體盤寬50.5%。體盤長佔體盤寬約99.2%，吻的頂點到第五對鰓裂的距離為57.4%，吻長13.0%，兩眼眶之間的寬度7.5%，兩出水口間的寬度12.5%且與吻長等長。嘴前緣的吻長與嘴寬相當。洩殖孔頂端到尾部的長度比到吻頂端長度還短。牙齒鈍且平滑，表皮無顆粒小突起，體背上有不均勻的褐色分布，體盤腹部的胸鰭及腹鰭邊緣呈灰白色。(陳柔蓉、林沛立2012/11編寫)

棲於水深約220－1100公尺。