| 主要参考文献 | Kottelat, M. and J. Freyhof, 2007 |
| 形态描述的性别 | 雄性; 雌性 |
| Bones in OsteoBase |
| 特殊器官 | no special organs |
| 不同的外表 | males alike females |
| 不同的颜色 | males alike females |
| 附注 |
| 显着的特徵 | striking type of mouth |
| 侧面体型 | eel-like |
| 横切面 | circular |
| 头部背面描绘 | |
| 眼的类型 | more or less normal |
| 口/吻尖的类型 | sucker-like |
| 口的位置 | sub-terminal/inferior |
| Type of scales | |
| 鉴别 |
With 58-65 trunk myomeres. The trunk is mottled in ammocoetes. The caudal fin is of spade-like shape and grey to black. The exolateral teeth are villiform, very small, weakly developed and frequently absent. |
| 鉴定难易度 | likely to be confused with closely related species. |
| 侧线 | 打断: No |
| 侧联机的鳞片 | |
| 侧联机鳞片数 | |
| 侧生系列的鳞片 | |
| 侧联机的鳞片列 | |
| 侧线下的鳞片列 | |
| 尾梗周围的鳞片 | |
| 触须 | |
| 鳃裂 (仅限于鲨鱼/ 鱼) | |
| 鳃耙 | |
| 在下肢上 | |
| 上枝鳃耙 | |
| 总数 | |
| 脊椎骨 | |
| 肛门前 | |
| 总数 |
| 属性 | no striking attributes |
| 鳍数 | 2 |
| 离鳍号码 | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| 棘总数 | 0 - 0 |
| 软条总数 | 0 - 0 |
| 脂鳍 | absent |
| 属性 | pointed; more or less normal |
| 鳍数 | |
| 棘总数 | |
| 软条总数 |
| 胸鳍 | 属性 absent |
| 脊椎 | |
| 软条 | |
| 骨盘的 | 属性 suppressed/absent |
| 位置 | |
| 脊椎 | |
| 软条 |