From the Chinese Press

Vigilance needed to control aliens

A resident in Liuzhou in the Guangxi Zhuang autonomous region was attacked by three vicious fish that later proved to be piranha. They bit in his hand when he was washing his dog in the Liujiang River on July 7. Laws and regulations should be issued to control not only piranhas, but also other alien species, says an article in Legal Daily. Excerpts:

Piranhas have no natural predator in China, and considering their fast reproduction rate, once they form a natural population they will cause huge damage to China's biodiversity and hydro-ecosystem.