| 主要參考文獻 | Teugels, G.G., 1986 |
| 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 | elongated |
| 橫切面 | circular |
| 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 | sub-terminal/inferior |
| 鑑別 |
Head rectangular to oval-shaped dorsally; snout broadly rounded; eyes laterally placed. Frontal fontanelle long and narrow; occipital fontanelle small and oval-shaped. Supraorbital and `dermosphenotic' bones separate but not reduced. Tooth plates broad. Pectoral spine slightly curved; outer side with strong, downward serrations. Gill rakers short and squat, although distantly set. Suprabranchial organ rather primitive. Openings of the secondary sensory canals display a regular pattern. |
| 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) | absent |
| 鰓耙 | |
| 在下肢上 | |
| 上枝鰓耙 | |
| 總數 | 8 - 11 |
| 脊椎骨 | |
| 肛門前 | |
| 總數 | 60 - 64 |
| 屬性 | extending over most of the back length |
| 鰭數 | 1 |
| 離鰭號碼 | Dorsal 0 |
| Ventral 0 | |
| 棘總數 | 0 - 0 |
| 軟條總數 | 76 - 87 |
| 脂鰭 | absent |
| 屬性 | more or less truncate; more or less normal |
| 鰭數 | 1 |
| 棘總數 | |
| 軟條總數 | 63 - 69 |
| 胸鰭 | 屬性 more or less normal |
| 脊椎 1 | |
| 軟條 8 - 9 | |
| 骨盤的 | 屬性 more or less normal |
| 位置 abdominal behind origin of D1 | |
| 脊椎 | |
| 軟條 6 |