Morphology Summary - Rineloricaria isaaci
形態學資料 Rineloricaria isaaci
檢索表
Abnormalities
主要參考文獻 Rodriguez, M. and A. Miquelarena, 2008
形態描述的性別
Bones in OsteoBase

性別內容

特殊器官
不同的外表
不同的顏色
附註

稚魚與成魚的特徵描述

顯著的特徵
側面體型  (shape guide) elongated
橫切面 compressed
頭部背面描繪
眼的類型
口/吻尖的類型 sucker-like
口的位置
Type of scales
鑑別

This species is distinguished from its congeners by the following characters: possess a long, naked area along the lateral part of the snout, extending posteriorly beyond the anteriormost pore of the infraorbital canal (vs. a very small, round, naked area, or a naked area that does not reach the anteriormost pore of the infraorbital or reaches just to it); nuptial males have a greatly lengthened pectoral and pelvic fins, the pectoral fins extend posterior to pelvic-fin origin and pelvic fins extending posterior to anal-fin origin (vs. pectorals not extending posterior to pelvic-fin origin and pelvic fins not extending posterior to anal-fin origin: strongly depressed head and body; trunk and caudal peduncle ventrally flattened and becoming more compressed caudally; dorsal surface of body slightly convex or straight at snout level, slightly convex at eye level, straight to dorsal fin, and straight from dorsal fin to penultimate plate of caudal peduncle; upper edge of orbit is moderately raised; well-developed triangular postorbital notch; head profile triangular with snout rounded in dorsal view, with straight sides in females and convex in mature males; presence of 1 pair of rostral plates and 4 paired postrostral plates; small odontodes, densely arranged in lines covering head, trunk and fin rays, making fish somewhat hispid; tip of snout with elongate area of naked skin and this naked area surpasses anteriormost pore of infraorbital ramus of sensory canal, reaching approximately to median of third postrostral plate; the naked area extending only over rostral and postrostral plates without odontodes, not exposing anterior region of mesethmoid forming rostral border; colouration ground colour brown with orange-yellow tones, all fins bright yellow-orange with black spots arranged in bands, caudal fin with rounded black spot on its base and wide vertical bar near the outer margin of fin (Ref. 79592).

鑑定難易度

分節特性 Rineloricaria isaaci

側線 打斷: No
側線上的鱗片
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
鰓裂 (僅限於鯊魚/ 魟魚)
鰓耙
在下肢上
上枝鰓耙
總數
脊椎骨
肛門前
總數

背鰭 (s)

屬性
鰭數
離鰭號碼 Dorsal   
Ventral  
棘總數
軟條總數
脂鰭

尾鰭  (shape guide)

屬性

臀鰭 (s)

鰭數
棘總數
軟條總數

偶鰭

胸鰭 屬性  
脊椎     
軟條   
骨盤的 屬性  
位置    
脊椎     
軟條   
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