| 主要參考文獻 | Nakamura, I. and N.V. Parin, 1993 |
| 形態描述的性別 | |
| Bones in OsteoBase |
| 特殊器官 | |
| 不同的外表 | |
| 不同的顏色 | |
| 附註 |
| 顯著的特徵 | striking shape of body |
| 側面體型 | elongated |
| 橫切面 | compressed |
| 頭部背面描繪 | more or less straight |
| 眼的類型 | more or less normal |
| 口/吻尖的類型 | more or less normal |
| 口的位置 | superior |
| Type of scales | scales embedded or partly/completely absent |
| 鑑別 |
Body extremely elongate, compressed and tapering to a point. Mouth large with a dermal process on the tip of each jaw. The lower hind margin of the gill cover convex. Lateral line running almost straight, closer to the ventral contour. Anal fins reduced to minute spinules buried in skin. Pelvic fins reduced to scale-like spines. Fresh specimens steely blue with metallic reflections, becoming silvery gray after death. |
| 鑑定難易度 |
| 側線 | 1 打斷: No |
| 側線上的鱗片 | |
| 側線上鱗片數 | |
| 側生系列的鱗片 | |
| 側線上的鱗片列 | |
| 側線下的鱗片列 | |
| 尾梗周圍的鱗片 | |
| 觸鬚 | 0 |
| 鰓裂 (僅限於鯊魚/ 魟魚) | |
| 鰓耙 | |
| 在下肢上 | |
| 上枝鰓耙 | |
| 總數 | |
| 脊椎骨 | |
| 肛門前 | |
| 總數 |
| 屬性 | extending over most of the back length |
| 鰭數 | 1 |
| 離鰭號碼 | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| 棘總數 | 0 - 0 |
| 軟條總數 | 118 - 132 |
| 脂鰭 | absent |
| 屬性 | pointed; more or less normal |
| 鰭數 | |
| 棘總數 | |
| 軟條總數 |
| 胸鰭 | 屬性 more or less normal |
| 脊椎 | |
| 軟條 | |
| 骨盤的 | 屬性 other (see diagnosis) |
| 位置 thoracic behind origin of D1 | |
| 脊椎 | |
| 軟條 |