金口马夫鱼 Heniochus chrysostomus jīn kǒu mǎ fū yú

金口马夫鱼，（Heniochus chrysostomus）又称羽毛关刀，属鲈形目蝴蝶鱼科、马夫鱼属，为一种生存在珊瑚礁区的热带海水鱼类。金口马夫鱼广布于印太海域南部至澳大利亚东部，活动于珊瑚礁丰茂的地区，摄食各类有机物碎屑及海藻等。

百度翻译提供：

Heniochus chrysostomus, also known as feather knife, is a tropical marine fish living in coral reef area, belonging to perch order, Phalaenopsis family and the genus marsupials. Widely distributed from the south of the Indo Pacific sea area to the east of Australia, the golden mouth puffer fish is active in areas with abundant coral reefs and feeds on all kinds of organic debris and algae.