四带马夫鱼 Heniochus singularius sì dài mǎ fū yú

四带马夫鱼（Heniochus singularius）又名花关刀，金刀，怪面刀，属鲈形目蝴蝶鱼科、蝴蝶鱼属，为一类热带海水珊瑚礁鱼类。四带马夫鱼产于印太海域印度尼西亚及澳大利亚东部，多活动于珊瑚礁周边，觅食各类有机物碎屑及珊瑚虫等，遇到危险时会游进珊瑚礁中躲避。

百度翻译提供：

Heniochus singularius, also known as Huaguan Dao, golden Dao and strange face Dao, belongs to the family Phalaenopsis of Perciformes and the genus Phalaenopsis. It is a kind of tropical sea coral reef fish. Four belt marlin is produced in Indo Pacific waters, Indonesia and eastern Australia. It mostly moves around coral reefs, foraging for all kinds of organic debris and coral insects. When in danger, it will swim into coral reefs to avoid.