Double-saddle butterflyfish, Chaetodon ulietensis     (Family Chaetodontidae)

Location: North Horn, Osprey Reef, Coral Sea, Australia

Depth: 15.5 m

Equipment: Nikon D70 with Nikkor 18-55mm f/3.5-5.6G ED II in Ikelite housing and 2 x Ikelite DS125

Settings: @ 55mm, ISO200, 1/60s, f/16