''Aulotrachichthys prosthemius'', also known as the West Pacific luminous roughy, is a species of
slimehead
Slimeheads, also known as roughies and redfish, are mostly small, exceptionally long-lived, deep-sea beryciform fish constituting the family Trachichthyidae (derived from the Greek ''trachys'' – "rough" and ''ichthys'' – "fish"). Found in tem ...
native to the
Northern Pacific from
Hawaii to
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. It can be found at depths ranging from , either in open water or near crevices and caves. It has a maximum length of .
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prosthemius
Fish described in 1902
{{Beryciformes-stub