| 主要參考文獻。 | Fischer, W., M.-L. Bauchot and M. Schneider (eds.), 1987 |
| 形態描述的性別 | |
| Bones in OsteoBase |
| 特殊器官 | no special organs |
| 不同的外表 | males alike females |
| 不同的顏色 | males alike females |
| 附註 |
| 顯著的特徵 | none |
| 側面體型 (shape guide) | elongated |
| 橫切面 | |
| 頭部背面描繪 | clearly convex |
| 眼的類型 | more or less normal |
| 口/吻尖的類型 | more or less normal |
| 口的位置 | terminal |
| 刻度類型 | cycloid scales |
| 鑑別 |
Body ribbon-like, gradually tapering to a pointed tail. Large, oblique mouth. Teeth widely spaced on both jaws. First two rays of dorsal fin unsegmented. Caudal fin with median rays longer and free at their tip. Dorsal and anal fins more or less joined to the caudal fin. |
| 鑑定難易度 |
| 側線 | 打斷: No |
| 側線上的鱗片 | 0 - 0 |
| 側線上鱗片數 | |
| 側生系列的鱗片 | |
| 側線上的鱗片列 | 0 - 0 |
| 側線下的鱗片列 | 0 - 0 |
| 尾梗周圍的鱗片 | |
| 觸鬚 | 0 |
| 鰓裂 (僅限於鯊魚/ 魟魚) | absent |
| 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 | 67 - 70 |
| 脂鰭 | absent |
| 屬性 | more or less truncate |
| 鰭數 | 1 |
| 棘總數 | |
| 軟條總數 | 60 - 60 |
| 胸鰭 | 屬性 more or less normal |
| 脊椎 | |
| 軟條 | |
| 骨盤的 | 屬性 more or less normal |
| 位置 thoracic behind origin of D1 | |
| 脊椎 | |
| 軟條 |