| 主要參考文獻 | Russell, B.C., 1990 |
| 形態描述的性別 | 雄性; 雌性 |
| Bones in OsteoBase |
| 特殊器官 | no special organs |
| 不同的外表 | males alike females |
| 不同的顏色 | males alike females |
| 附註 |
| 顯著的特徵 | none |
| 側面體型 | fusiform / normal |
| 橫切面 | oval |
| 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 | terminal |
| Type of scales | ctenoid scales |
| 鑑別 |
Head scales reaching forward to or just in front of level of anterior nostrils. Scaled area between nostrils with a distinct naked medial wedge-shaped notch. Suborbital scaly posteriorly. Lower limb of preopercle with 2 or 3 scale rows. Pelvic fins moderately long, reaching to or almost to level of anus. Upper lobe of caudal fin slightly longer than lower. Axillary scale present. Color: Upper body pale blue, lower whitish. |
| 鑑定難易度 |
| 側線 | 1 打斷: No |
| 側線上的鱗片 | 41 - 47 |
| 側線上鱗片數 | |
| 側生系列的鱗片 | |
| 側線上的鱗片列 | 2.5 - 6 |
| 側線下的鱗片列 | 11 - 20 |
| 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 | 5 - 7 |
| 上枝鰓耙 | 5 - 6 |
| 總數 | 7 - 15 |
| 脊椎骨 | |
| 肛門前 | |
| 總數 |
| 屬性 | no striking attributes |
| 鰭數 | 1 |
| 離鰭號碼 | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| 棘總數 | 10 - 10 |
| 軟條總數 | 9 - 9 |
| 脂鰭 | absent |
| 屬性 | forked; more or less normal |
| 鰭數 | 1 |
| 棘總數 | 3 - 3 |
| 軟條總數 | 7 - 7 |
| 胸鰭 | 屬性 more or less normal |
| 脊椎 0 | |
| 軟條 15 - 17 | |
| 骨盤的 | 屬性 more or less normal |
| 位置 thoracic behind origin of D1 | |
| 脊椎 1 | |
| 軟條 5 - 5 |