| 主要參考文獻 | Randall, J.E., G.R. Allen and R.C. Steene, 1990 |
| 形態描述的性別 | |
| Bones in OsteoBase | Skull, Spine |
| 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 | compressed |
| 頭部背面描繪 | clearly convex |
| 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 | cycloid scales |
| 鑑別 |
Description: Body superficially naked, with minute and embedded scales. Body silvery with light metallic bluish tinge dorsally; a small diffuse dark spot on opercle (Ref. 26938); juveniles with five chevron -shaped bars (Ref. 90102). Scales minute and embedded; scutes 12-30 (Ref. 90102). Weakly developed scutes, appearing naked. Only fish in the family that does not have dorsal fin spines throughout life (Ref. 26938). Spines of first dorsal fin embedded and not apparent at fork length greater than about 17cm; spines of first anal fin embedded with growth (Ref. 90102). Anterior 4-5 dorsal and anal soft rays of juveniles extremely long and filamentous (Ref. 48635, Ref. 90102). Villiform teeth disappearing with growth. Body very deep in juveniles about 1.5 in FL, becoming more elongate with growth (Ref. 90102). |
| 鑑定難易度 |
| 側線 | 1 打斷: No |
| 側線上的鱗片 | 120 - 140 |
| 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) | |
| 鰓耙 | |
| 在下肢上 | 12 - 17 |
| 上枝鰓耙 | 4 - 6 |
| 總數 | 16 - 23 |
| 脊椎骨 | |
| 肛門前 | |
| 總數 |
| 屬性 | other |
| 鰭數 | 2 |
| 離鰭號碼 | Dorsal 0 - 0 |
| Ventral 0 - 0 | |
| 棘總數 | 7 - 8 |
| 軟條總數 | 18 - 22 |
| 脂鰭 | absent |
| 屬性 | forked; more or less normal |
| 鰭數 | 2 |
| 棘總數 | 3 - 3 |
| 軟條總數 | 15 - 20 |
| 胸鰭 | 屬性 more or less normal |
| 脊椎 0 | |
| 軟條 18 - 20 | |
| 骨盤的 | 屬性 more or less normal |
| 位置 thoracic before origin of D1 | |
| 脊椎 | |
| 軟條 |