Scatophagus argus; Print; Scatophagus argus; or the spotted scat; is a species of fish in the scat family Scatophagidae. It occurs in two basic color morphs which are called green scat and ruby or red scat. This fish is generally distributed around the Indo-Pacific region; to Japan; New Guinea; and southeastern Australia. They live in coastal muddy areas; including estuaries; mangroves; harbours; and the lower courses of rivers. They are popular aquarium fish usually used to eliminate algae in the fish tank.; 1700-1880