| 主要參考文獻 | Bragança, P.H.N., M.A. Barbosa and J.L. Mattos, 2013 |
| 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) | short and / or deep |
| 橫切面 | |
| 頭部背面描繪 | |
| 眼的類型 | |
| 口/吻尖的類型 | |
| 口的位置 | |
| Type of scales | |
| 鑑別 |
Differs from its unique congener, Nematocharax costai, by having the following characters: presence of hooks or spinules on dorsal and pelvic-fins (vs. absence); more than seven anal-fin rays with spinules (vs. five rays); absence of a long dark pink horizontal mark on the caudal peduncle (vs. presence); four or fewer supraneurals (vs. five); pelvic-fin filament pale rosy (vs. yellow) (Ref. 93323). |
| 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 | |
| 脊椎骨 | |
| 肛門前 | |
| 總數 |
| 屬性 | first fin ray very elongated |
| 鰭數 | 1 |
| 離鰭號碼 | Dorsal |
| Ventral | |
| 棘總數 | |
| 軟條總數 | |
| 脂鰭 | present |
| 屬性 | forked |
| 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 rays very elongated |
| 位置 abdominal before origin of D1 | |
| 脊椎 | |
| 軟條 |