Centroberyx, often referred to as nannygais, is genus of ray-finned fishes found in the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

 and western Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

, with the greatest species richness

Species richness

Species richness is the number of different species in a given area. It is represented in equation form as S.Species richness is the fundamental unit in which to assess the homogeneity of an environment. Typically, species richness is used in conservation studies to determine the sensitivity of...

 off southern Australia

Southern Australia

The term southern Australia is generally considered to include the States and territories of Australia of New South Wales, Victoria, South Australia, Tasmania and the Australian Capital Territory...

. They are reddish in colour and somewhat resemble the related soldierfish. Depending on species, they have a maximum length of 20 to 66 cm (7.9 to 26 in). They are found at depths of 10 to 500 m (32.8 to 1,640.4 ft). Members of this genus are also known from fossil

Fossil

Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

s from the Cretaceous

Cretaceous

The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...

.

Species

The following extant species are in the genus Centroberyx:

• Redfish, Centroberyx affinis (Günther, 1859).
• Yelloweye nannygai, Centroberyx australis Shimizu & Hutchins, 1987.
• Centroberyx druzhinini (Busakhin, 1981).
• Bight redfish, Centroberyx gerrardi (Günther, 1887).
• Swallow-tail, Centroberyx lineatus (Cuvier, 1829).
• Centroberyx rubricaudus Liu & Shen, 1985.
• Short alfonsino Centroberyx spinosus (Gilchrist, 1903).