主要参考文献 | Zanata, A.M. and P. Camelier, 2009 |
形态描述的性别 | |
Bones in OsteoBase |
特殊器官 | |
不同的外表 | always different morphology between mature adults |
不同的颜色 | |
附注 | Males differ from females by having the following characters: presence of bony hooks on anal fin rays; anal fin border somewhat strainght to slightly concave (vs. concave on anterior half in females); distal portion of first pelvic-fin rays distinctly darker than females; slightly higher body depth; longer pectoral fin and pelvic fin; and shorter anal-fin lobe (Ref. 81202). |
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 | cycloid scales |
鉴别 |
Diagnosed from all its congeners from northeastern Brazilian drainages by having distal portion of pelvic fins dark, a combination of sexually dimorphic characters, posteroventral portion of body and fins (except pectoral) reddish in life, and inconspicuous humeral and caudal spots. Can be further distinguished by having the following characters: highest body depth just anterior of dorsal-fin origin, scales on lateral line 32-34; five series of scales between dorsal origin and lateral line; three series of scales between lateral line and pelvic-fin origin; anal fin with 20-23 branched rays; dorsal usually ii,8,i; base of anterior anal-fin rays with 8-12 scales; one or two maxillary teeth; presence of no more than 5 cusps and dentary teeth abruptly decreasing in size posteriorly (Ref. 81202). Description: Dorsal-fin rays ii,8, ii,8,i, or ii,9; anal-fin rays iii,20, 21, 22, or 23; pectoral-fin rays i,9, 10, 11, or 12; pelvic-fin rays i,6 or 7. Scales rows between lateral line and pelvic-fin insertion 3 (Ref. 81202). |
鉴定难易度 |
侧线 | 打断: No |
侧联机的鳞片 | 32 - 34 |
侧联机鳞片数 | 32 - 34 |
侧生系列的鳞片 | |
侧联机的鳞片列 | 5 - 5 |
侧线下的鳞片列 | |
尾梗周围的鳞片 | 14 - 14 |
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 | 33 - 33 |
属性 | no striking attributes |
鳍数 | 1 |
离鳍号码 | Dorsal |
Ventral | |
棘总数 | |
软条总数 | 10 - 11 |
脂鳍 | present |
属性 | forked |
鳍数 | |
棘总数 | |
软条总数 | 23 - 26 |
胸鳍 | 属性 more or less normal |
脊椎 | |
软条 10 - 13 | |
骨盘的 | 属性 more or less normal |
位置 abdominal before origin of D1 | |
脊椎 | |
软条 7 - 8 |