Optivus agastos

Optivus agastos, also known as the violet roughy, is a species in the family Trachichthyidae. It is native to southeast Australia in the temperate waters of the Southwest Pacific and lives near reefs at depths from 1 to 146 metres (3.3 to 479.0 ft). It can reach sizes of up to 9.5 centimetres (3.7 in). Its name, "Optivus", means chosen in Latin, and "agastos" comes from Greek meaning "near kinsman," which refers to its similarity to Optivus elongatus.^[1]

Violet roughy
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Trachichthyiformes
Family:	Trachichthyidae
Genus:	Optivus
Species:	O. agastos
Binomial name
Optivus agastos M. F. Gomon, 2004