| 主要参考文献 | Bass, A.J., 1986 |
| 形态描述的性别 | |
| Bones in OsteoBase |
| 特殊器官 | |
| 不同的外表 | |
| 不同的颜色 | |
| 附注 |
| 显着的特徵 | |
| 侧面体型 | fusiform / normal |
| 横切面 | |
| 头部背面描绘 | |
| 眼的类型 | |
| 口/吻尖的类型 | |
| 口的位置 | |
| Type of scales | placoid scales |
| 鉴别 |
Pectoral fins about as long as head or longer, relatively broad-tipped in young and adults; snout usually narrowly to bluntly pointed, usually not acute; cusps of upper and lower anterior teeth straighter, with tips not reversed (Ref. 43278). Caudal fin lunate, with a very long lower lobe (Ref. 13574). Dark blue above, white below, with dusky markings on underside of snout, around mouth (Ref. 6581). |
| 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 | |
| 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 | other (see remark); asymmetric |
| 鳍数 | 1 |
| 棘总数 | 0 - 0 |
| 软条总数 | 0 - 0 |
| 胸鳍 | 属性 more or less normal |
| 脊椎 0 | |
| 软条 0 - 0 | |
| 骨盘的 | 属性 more or less normal |
| 位置 abdominal behind origin of D1 | |
| 脊椎 0 | |
| 软条 0 - 0 |