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any of about 11 species of small marine fishes constituting the family Opisthoproctidae (order Salmoniformes), with representatives in each of the major oceans. The name spookfish, or barreleye, as they are sometimes called, originates from their unusual eyes, which are pointed upward and are borne at the end of short tubular stalks. Specimens have been collected at depths of almost 900 m (3,000 feet) and are nearly always found at least 100 m (330 feet) below the surface