Monotaxis grandoculis, the Humpnose big-eye bream, is a species of emperor native to the Indian Ocean and the Pacific Ocean to the Hawaiian Islands. It inhabits areas with sand or rubble substrates adjacent to coral reefs at depths of from 1 to 100 metres (3.3 to 328.1 ft), mostly between 5 to 30 metres (16 to 98 ft). This species can reach a length of 60 centimetres (24 in) TL though most do not exceed 40 centimetres (16 in). It has been recorded to reach a weight of 5.9 kilograms (13 lb). This species is commercially important as a food fish and is also popular as a game fish. It can also be found in the aquarium trade. It is currently the only known member of its genus.