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Balantiocheilos melanopterus


Balantiocheilos melanopterus
Silver Shark
银鲨
The Bala shark, Balantiocheilos melanopterus, also known as the tricolor shark, silver shark, or shark minnow, is a fish species of the family Cyprinidae, and is one of the two species in the genus Balantiocheilos. This species is not a true shark, but is commonly called a "shark" because of its torpedo-shaped body and large fins. The Bala shark occurs in the Mekong and Chao Phraya River basins, Malay Peninsula, Sumatra, and Borneo. These fish have a silver body with black margins on their dorsal, caudal, anal, and pelvic fins. They have big eyes to find and catch their prey. The Bala shark will grow to a maximum length of 35 cm but takes a long time to do so. Bala sharks are popular aquarium fish. These fish are generally peaceful and good companions to many other types of tropical fish. The nickname "shark" is used because of their torpedo shaped bodies and long fins. They are not actual sharks. 

They are a hardy fish that will tolerate temperature changes, pH changes, and other factors to which other fish may be sensitive. The Bala shark prefers be kept in groups of two or more. These fish require a covered aquarium as they are very skilled jumpers.

摄食量比较大,生长快,体格健壮,容易饲养,要用大型水族箱,加盖防跳。性情温和活泼,喜欢集群游动。幼鱼时期可和它种鱼混养,长大后单养或者和体格相当的鱼混养。身长可达30余厘米,亚纺锤形。各鳍端均呈尖形,背鳍、腹鳍、臀鳍三角形,尾鳍深叉形。体色银色,腹部泛白,各鳍微泛黄,明显特征是:背鳍、腹鳍、臀鳍和尾鳍外缘均有黑色宽边,黑边内侧为淡灰色宽带,十分醒目。
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