Glassy sweeper (Pempheris schomburgki) schooling, Fernando de Noronha national marine sanctuary, Pernambuco, Brazil, South America

Redmouth Grouper (Aethaloperca rogaa) Showing its namesake bright red inside mouth. Can often be found living amongst colonies of Yellow Sweeper (Parapriacanthus ransonneti) which it vigorously protects from attack by passing jacks, in return for feeding from the same glassfish colony. Red Sea.

Juvenile Barracuda (Sphyraena Sp.). Found amongst a dense school of Yellow Sweeper making use of the protection of a Redmouth Grouper, until their increasing size gave away their camouflage. Red Sea.

Redmouth Grouper Ò Aethaloperca rogaa Ò So named because of its bright red inside mouth. Can often be found living amongst colonies of Yellow Sweeper (Parapriacanthus ransonneti) which it vigorously protects from attack by passing jacks, in return for feeding from the same glassfish colony.

Redmouth Grouper (Aethaloperca rogaa). So named because of its bright red inside mouth. Can often be found living amongst colonies of Yellow Sweeper (Parapriacanthus ransonneti) which it vigorously protects from attack by passing jacks, in return for feeding from the same glassfish colony. Red Sea.

Juvenile Barracuda (Sphyraena Sp. ). Found amongst a dense school of Yellow Sweeper making use of the protection of a Redmouth Grouper, until their increasing size gave away their camouflage.Red Sea.

Yellow Sweeper (Parapriacanthus ransonneti) Live by day in dense groups and moving into open water to feed on plankton at night.Red Sea.

Yellow Sweeper (Parapriacanthus ransonneti). Red Sea.

Yellow Sweeper (Parapriacanthus ransonneti). Live by day in dense groups and moving into open water to feed on plankton at night.Red Sea.

Yellow Sweeper (Parapriacanthus ransonneti). Red Sea.

Yellow cabin of the Kampenwandbahn ropeway, with skis on the outside of the cabin and a witch's broom for carnival, Chiemgau, Bavaria, Germany, Europe

Man with a broom sweeping autumn leaves from the pavement outside his house, Germany, Europe

Indonesia, School of copper sweepers, small fish with large yellow eye.