香鱼 Plecoglossus altivelis Temminck et Schegel

英文名： Ayu

地方名：油香鱼、留香鱼

分类地位：鲑形目，香鱼科，香鱼属

形态特征：体细小，侧扁。头小，吻尖，吻前端向下弯曲成钩形突起。口大。体被有细小的圆形鳞片，脂鳍小，与臀鳍后端相对。背鳍 iii-9；臀鳍 ii-14。侧线鳞 142~150。体背部苍黑色，体侧带黄色，腹部银白色，各鳍淡黄色。头部、体侧、鳍上有小黑斑。成鱼体侧有1条宽大的彩虹色纵带。

生态习性：栖息于沿海水质清新处，初夏则从海中上溯到淡水中产卵，幼鱼到海中育肥。香鱼在海中以小型水生动物为食，进入淡水水域后，常以硅藻、蓝藻等食物为主，也摄食昆虫类。

地理分布：辽宁到福建沿海均有分布。20世纪 80年代引入宁夏。

经济价值：为小型名贵经济鱼类，肉质鲜美、风味独特而驰名中外。

ENGLISH NAME：Ayu

LOCAL NAME：Youxiangyu; Liuxiangyu

CLASSIFICATION：Salmoniformes；Plecoglossidae; Plecoglossus

MORPHOLOGICAL CHARACTERISTICS: Thin body in compressed shape; small head and pointed mouth whose nose bends downwards which forms evection in hook shape; big mouth; body is covered with little cycloid scales, small adipose fin which opposite to the back of anal fin; dorsal fin iii-9; anal fin ii-14; scales in lateral line 142~150; dark black back, side body is yellow; abdomen is silvery white; fins are light yellow;there are small black spots around head,body sides, and fins;the adult has a broad longitudinal ribbon-colored stripe on its body side .

ECOLOGICAL HABITS：It inhabits in clear coastline water. At the beginning of summer, it migrates from sea to fresh water area to spawn. The young develops in the sea. The fish lives on minitype aquatic animals in the sea; while in the fresh water area, it usually lives on diatom, cyanophyta, as well as insects.

GEOGRAPHICAL DISTRIBUTION: It is distributed in the coastal area from Liaoning to Fu-jian Province, and was introduced in Ningxia in 1980's.

ECONOMIC VALUE：It is a minitype precious commercial fish, and famous for its delicious taste and unique flavor both from home and abroad. PcN+33e6bUhF1btNyNGQBk9pDhHhDVhizhmSwrLOJdQnwQywZfwsDaMzd4AtEoHW