Canthigaster margaritata. The Red Sea Toby.

A small and cute fish, which is hard to find and capture with the
camera.  

The size: 12 cm / 4,7 inches.

The color: Dark brown to olive, except for a white belly, covered in blue spots, blue line markings between the eyes and on the back.

Most common in the Red Sea and Gulf of Aden, but also in the Indian Ocean and Indo-Pacific tot Japan.