Hoplostethus occidentalis, more commonly known as the Atlantic roughy or western roughy, is a member of the family Trachichthyidae.

It has a wide distribution in the Atlantic Ocean ranging from as far south as Brazil all the way to southern Nova Scotia.

It is a deepwater fish, living at depths between 485 and 550 metres (1,591 and 1,804 ft).

It can reach lengths of up to 17.3 centimetres (6.8 in) SL.

This Beryciformes-related article is a stub.