The fish is yellow with
      black diagonal strips, black edges of fins and the tail.

Red Sea racoon butterflyfish

( Chaetodon fasciatus )

In some sources it named Diagonal or Striped butterflyfish. The fish is yellow with black diagonal stripes, dark edges of fins and the tail. There is a black mask on its eyes and a white horizontal stripe on the forehead. The fish feed on corals, plants, small invertebrates, jellyfish. Size - 20 cm.

Small shoals of these fish swim near corals. They don't hide in corals like other fish. They bravely surround a photographer, often they swim between me and my underwater camera. It is easy to photograph these fish closely.

The fish is yellow
      with black diagonal strips, black edges of fins and the tail.
another one

A fish with
      yellow-black diagonal stripes. Its tail has a row of orange dots
      and a transparent rim.
macro of the tail