团头鲂Megalobrama amblycephala Yih

英文名： Bluntnose black bream

地方名： 武昌鱼

分类地位： 鲤形目，鲤科，鲂属

形态特征： 体形侧扁，轮廓为菱形状。胸部平坦。腹棱不完全。头部比较短小。口较小，吻比较圆钝，故被定义为团头鲂。尾柄短，其长度等于或小于尾柄高。胸鳍比较短小。背鳍iii- 7；臀鳍iii- 26~29。侧线鳞50~60。体呈灰黑色，有一道道灰白色纵纹。

生态习性： 栖息在水草丛生水体的中下层，属偏草食性的杂食性鱼类。在人工饲养条件下可摄食配合饲料。2～3 龄性成熟，性成熟个体500g 左右，繁殖期5～6 月。

地理分布： 原产于长江中下游，是湖北梁子湖的特产。20 世纪80 年代引入宁夏，是宁夏池塘、湖泊主要养殖品种。

经济价值： 肉味鲜美，个体大小适中，适合消费者饮食习惯，经济价值较高。

ENGLISH NAME：Bluntnose black bream

LOCAL NAME：Wuchangyu

CLASSIFICATION：Cypriniformes；Cyprinidae; Megalobrama

MORPHOLOGICAL CHARACTERISTICS: Compressed body in diamond shape; flat thoracic region; incomplete abdomen scutes; small and shrot head; small mouth; because of its obtuse round mouth, it is called as Bluntnose black bream; short caudal peduncle which length is equal to or less than that of width; short pectoral fin; dorsal fin iii-7; anal fin iii-26~29; scales in lateral line 50~60; body is grey black with offwhite longitudinal stria-tions around.

ECOLOGICAL HABITS： It inhabits in middle and under stratum of water body with thick aquatic plants, which belongs to omnivore fish but with phytophagous tendency; the cul-tured fish may eat artificial mixed feed; it matures at the age of 2～3; the matured adult weighs around 500g; the breeding period is from May to June.

GEOGRAPHICAL DISTRIBUTION: It is originated from the middle and lower reaches of Changjiang River, and it is a speciality product of Liangzi Lake in Hubei Province. It was introduced in Ningxia in 1980's, and it is the major culturing species in lakes and ponds in Ningxia.

ECONOMIC VALUE： Because of its delicious food, moderate size, it is popular in restaurant. KwTUmJMBRMRo3Qv4GbiAE5GDMEijfMF7uQfl4tJFgpNMHmww263n7A7+EbT4vOVf