scientifically known as Aethaloperca rogaa, is a predatory fish species belonging to the family Serranidae. It is native to the Indian Ocean and the Western Pacific Ocean, from the Red Sea to the eastern coast of Africa, south to Natal, and east to Samoa and the Line Islands. The Redmouth Grouper is a large species of fish, capable of reaching lengths of up to 120 cm and weighing over 25 kg.

The Redmouth Grouper has a robust, elongated body with a large head and mouth. It has a broad, slightly rounded tail and dorsal and anal fins with a high count of spines. The body is covered in small, rough scales, and the skin is generally a grayish-brown color with some darker spots and blotches. The most distinguishing feature of the Redmouth Grouper is its large mouth, which has a reddish-orange color, contrasting with the rest of the body.

The Redmouth Grouper is a solitary and territorial species, and it can be found inhabiting coral reefs and rocky outcrops at depths ranging from 5 to 60 meters. Juvenile Redmouth Groupers are known to form schools, but as they grow larger, they become more solitary. They are primarily carnivorous and feed on a variety of prey, including small fish, crustaceans, and cephalopods.

Due to its large size and popularity as a food fish, the Redmouth Grouper is a heavily targeted species by commercial and recreational fisheries. The species is listed as Near Threatened on the IUCN Red List, and its populations are declining due to overfishing, habitat loss, and degradation.

In terms of its impact on human society, the Redmouth Grouper is highly valued for its meat, which is considered a delicacy in many parts of the world. The species is commercially fished and is a popular target for recreational fishing. However, overfishing and habitat degradation have led to declines in its populations, and conservation measures are needed to ensure its survival. Some measures that have been proposed include the establishment of marine protected areas, fishing regulations, and habitat restoration efforts.