| 主要參考文獻 | Sabaj, M.H., 2005 |
| 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 | |
| 側面體型 (shape guide) | elongated |
| 橫切面 | |
| 頭部背面描繪 | |
| 眼的類型 | eyes with fixed fatty (adipose) tissue/eyelids |
| 口/吻尖的類型 | |
| 口的位置 | sub-terminal/inferior |
| Type of scales | |
| 鑑別 |
Shallow midlateral plates covering less than or equal to 1/4 body depth. Anterior nuchal plate usually of moderate width (longer than wide) permitting weak to firm suture between supraoccipital and middle nuchal plate. Also differs from all species of Leptodoras except L. copei by possessing a distal tip of lower labial extension extending beyond that of upper labial extension (Ref. 56896). |
| 鑑定難易度 |
| 側線 | 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 | |
| 鰓裂 (僅限於鯊魚/ 魟魚) | |
| 鰓耙 | |
| 在下肢上 | |
| 上枝鰓耙 | |
| 總數 | 15 - 20 |
| 脊椎骨 | |
| 肛門前 | |
| 總數 |
| 屬性 | |
| 鰭數 | 1 |
| 離鰭號碼 | Dorsal |
| Ventral | |
| 棘總數 | 1 - 1 |
| 軟條總數 | 6 - 6 |
| 脂鰭 |
| 屬性 | forked |
| 鰭數 | |
| 棘總數 | |
| 軟條總數 | 14 - 15 |
| 胸鰭 | 屬性 |
| 脊椎 1 | |
| 軟條 8 - 10 | |
| 骨盤的 | 屬性 |
| 位置 | |
| 脊椎 | |
| 軟條 7 - 7 |