飘浮蝴蝶鱼，又称斜纹蝴蝶鱼，俗名假人字蝶，为辐鳍鱼纲鲈形目蝴蝶鱼科的其中一种。

本鱼分布于印度太平洋区，包括东非、亚丁湾、毛里求斯、马尔代夫、印度、斯里兰卡、菲律宾、印尼、中国南海、东海、日本、**、越南、新几内亚、所罗门群岛、澳洲、马里亚纳群岛、马绍尔群岛、密克罗尼西亚、帕劳、瑙鲁、斐济群岛、夏威夷群岛、法属波里尼西亚、复活节岛、加拉巴哥群岛、东加、基里巴斯、图瓦卢、万纳杜、萨摩亚群岛、厄瓜多尔、墨西哥等海域。

Not to be confused with the Indian Vagabond Butterflyfish (C. decussatus).

The Vagabond Butterflyfish (Chaetodon vagabundus) is a species of butterflyfish (family Chaetodontidae). It is found in the Indo-Pacific region from the Red Sea and off East Africa as far east as the Tuamotu Islands, north to southern Japan and south to the Austral Islands.