Fish ID: Indian Vagabond Butterflyfish

Butterflyfish indian vagabond butterflyfish chaetodon decussatus bal
Family Butterflyfish (CHAETODONTIDAE)
species Chaetodon decussatus
size Up to 20cm
locality Coral and rocky reefs
behaviour Solitary or in pairs
range Indian Ocean and Asian Pacific

The body is white with two sets of parallel black lines perpendicular to each other. A black line through the eye, and the back of the dorsal fin is completely black. In the regular Vagabond this is yellow.