马口鱼 mǎ kǒu yú Opsariichthys bidens

马口鱼（学名：Opsariichthys bidens）俗称马口，隶属鲤形目，鲤科，鱼丹亚科，马口鱼属，在我国除青藏高原、新疆和台湾等地外，南至海南岛、北至黑龙江的东部江河中均有分布，其中浙江省内各水系中上游大小支流都有分布 。马口鱼不仅繁殖力强、生长速度快，而且其肉味鲜美，深受广大消费者喜爱，但由于近年来捕捞强度过大和生态环境改变，瓯江流域的马口鱼野生资源已十分稀缺。

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The horse mouth fish (scientific name: opsariichthys Bidens), commonly known as horse mouth, belongs to Cypriniformes, Cyprinidae, ichthyosaceae and the genus horse mouth fish. It is distributed in the eastern rivers from Hainan Island in the South and Heilongjiang in the north in China, except the Qinghai Tibet Plateau, Xinjiang and Taiwan. Among them, large and small tributaries in the upper reaches of various water systems in Zhejiang Province are distributed. Horsemouth fish not only has strong fecundity and fast growth, but also has delicious meat, which is deeply loved by consumers. However, due to the excessive fishing intensity and the change of ecological environment in recent years, the wild resources of horsemouth fish in Oujiang River Basin have been very scarce.