Ventrifossa rhipidodorsalis Okamura 1984

Mouth inferior with narrow tooth band on lower jaw, a large area of spineless scales behind 1st dorsal fin, and slender dense spinules on scales. Ventral luminous organ rather large, situated between pelvic bases and connected with black periproct by narrow naked groove; lens faintly visible on photophore. First dorsal largely blackish, white distally and basally. Anterior portion of anal fin with narrow black margin. Vent located before a vertical through origin of 1st dorsal fin (Ref. 54421).

分布於西北太平洋區，由南日本、中國東海至臺灣東北部海域。

一般以底拖網捕獲，不具食用價值，通常做為下雜魚用。

體型延長，側扁。頭部中大型。口大，下位，頦部有一長鬚；上、下頜齒為錐狀，多列排成窄齒帶，內側齒不特別大於外側齒。鰓被架 7；鰓耙數0+12-13。體被較大型櫛鱗，鱗片上佈滿向後突起之三角形弱棘；第一背鰭基底後方具無棘鱗區；第一背鰭中部至側線之鱗列數5-5.5。肛門離臀鰭稍遠，發光器短小，位於兩腹鰭基底之間，約略分為兩部份，前端為黑色小圓斑，後端為黑色裸露之無發光區域，其上有肛門及尿殖孔。第一背鰭具硬棘II，第II硬棘前緣呈鋸齒狀，軟條10-11；腹鰭軟條9。體色為銀灰色，鼻吻部邊緣及鼻中隔有黑邊；第一背鰭有一明顯黑斑，臀鰭前半部邊緣黑色。

主要棲息於水深400-600公尺砂泥底水域。屬深海底棲性魚。肉食性魚類，以小型蝦、蟹為主食。

Ventrifossa rhipidodorsalis is a species of rattail. This is a deep-water fish found at depths of up to 535 m. It is found in waters off southern Japan, northern Taiwan, the Philippines, and in the South China Sea.

This species reaches a length of up to 21 cm. It can be distinguished from its congeners by the patterning of the fins: the first dorsal fin is mostly black with white at the base and tip, while the elongated anal fin has a black margin towards the front. There is a large bioluminescent organ located between the bases of the pelvic fins.