形态学资料 Nimbochromis polystigma
检索表
Abnormalities
主要参考文献 Snoeks, J. and J. Manuel, 2004
形态描述的性别
Bones in OsteoBase

性别内容

特殊器官
不同的外表
不同的颜色
附注

稚鱼与成鱼的特徵描述

显着的特徵
侧面体型
横切面
头部背面描绘
眼的类型
口/吻尖的类型
口的位置 terminal
Type of scales
鉴别

Diagnosis: dark spots on pectoral fins; pattern of speckles on body and head; without conspicuous dark bars radiating from the eye; no downward-directed snout; mouth terminal; premaxillary pedicel length <34% head length (Ref. 55922).

Description: outer teeth in jaw stout and unicuspid, sometimes a few bicuspid in larger specimens, and bicuspid in small specimens; inner teeth in jaw stout and (weakly) tricuspid, slightly or strongly recurved in large specimens; 3-4 series of scales on the cheek; lower pharyngeal jaw normal or slightly broad and shallow; pharyngeal teeth widely set, sharp and stout, and occasionally enlarged; gill-rakers normal or short, the largest somewhat flattened but not polyfid; 21-25 scales in upper part of lateral line, 11-16 in lower part; 5-6 scales between pectoral and pelvic fins (Ref. 55922).

Coloration: Live: melanin pattern as in preserved fish; nuptial color pattern overlays the speckled pattern in males, and possibly also in reproductively active females (Ref. 55922). Adult territorial males: characteristic spotted pattern not readily observable; lips green-blue; dorsal, caudal and anal fins blue; dorsal fin with red-orange lappets and white submarginal band; brown maculae and striae pattern not well developed; anal fin yellow/orange distally; pelvic fins dark with white leading edge; less territorial males may have a blue head and yellow body with dark brown spots and speckles, and distal part of anal fin brown-orange (Ref. 55922). Females and immature males: background color white or yellow with many dark brown speckles and spots, to a large extend arranged in rows on dorsal, caudal and anal fin (Ref. 55922). Preserved: speckles and spots on head, body and fins, either as large speckles or giving a more peppered appearance, variable, sometimes difficult to observe; speckles on pectoral fins always present; general body color in both males and females yellow to dark brown; blotches more or less in 5 longitudinal series: 2 dorsal series, 1 midlateral series and 2 ventral series; fins dark brown in larger specimens, camouflaging the speckled pattern except in the pectoral fins; lappets of dorsal fin, trailing edge of pelvic fin and ventral margin of anal fin white; in small specimens the maculae in the caudal fin are clearly arranged in vertical bars (Ref. 55922).

鉴定难易度

分节特性 Nimbochromis polystigma

侧线 打断: No
侧联机的鳞片 32 - 35
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 10 - 16
尾梗周围的鳞片
触须
鳃裂 (仅限于鲨鱼/ 鱼)
鳃耙
在下肢上 10 - 13
上枝鳃耙 3 - 5
总数
脊椎骨
肛门前
总数

背鳍 (s)

属性
鳍数 1
离鳍号码 Dorsal   0 - 0
Ventral  0 - 0
棘总数 15 - 17
软条总数 9 - 12
脂鳍 absent

尾鳍

属性

臀鳍 (s)

鳍数 1
棘总数 3 - 4
软条总数 9 - 11

偶鳍

胸鳍 属性  
脊椎     0
软条   13 - 15
骨盘的 属性  
位置    
脊椎     
软条   
主要参考文献 (例如 9948)
字汇 ( 例如 cephalopods )
Comments & Corrections
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