主要参考文献 | Ng, H.H. and Z. Jaafar, 2008 |
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 | none |
侧面体型 | fusiform / normal |
横切面 | compressed |
头部背面描绘 | clearly concave |
眼的类型 | more or less normal |
口/吻尖的类型 | clearly protrusible |
口的位置 | |
Type of scales | ctenoid scales |
鉴别 |
This species differs from its congeners by its pale bluish-white body color in life (vs. mottled brown); differs from Nandus nandus, the only South Asian congener, in having body depth 24.3-29.1% SL (vs. 28.2-34.3); pelvic fin length 16.2-18.9% SL (vs. 18.0-21.2); from Nandus nebulosus, Nandus oxyrhynchus and Nandus prolixus by the presence (vs. absence) of dark spot on the caudal peduncle, by having lateral line scales 45-52 (vs. 24-37) and body depth 24.3-29.1% SL (vs. 30.7-44.1) (Ref. 75197). |
鉴定难易度 |
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 | 4 - 6 |
侧线下的鳞片列 | 15 - 17 |
尾梗周围的鳞片 | 18 - 21 |
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 | extending over most of the back length |
鳍数 | 1 |
离鳍号码 | Dorsal |
Ventral | |
棘总数 | 12 - 14 |
软条总数 | 11 - 14 |
脂鳍 | absent |
属性 | more or less truncate |
鳍数 | |
棘总数 | 3 - 3 |
软条总数 | 7 - 8 |
胸鳍 | 属性 more or less normal |
脊椎 0 | |
软条 14 - 16 | |
骨盘的 | 属性 |
位置 behind origin of D1 | |
脊椎 1 | |
软条 5 - 6 |