What is "bastard trumpeter"

n. A trumpeter (gloss: fish) of the species (taxlink Latridopsis forsteri species)

Latridopsis forsteri, the bastard trumpeter or copper moki, is a species of trumpeter native to the eastern Indian Ocean and southwestern Pacific Ocean around Australia(Robe, South Australia, to Sydney, New South Wales, and around Tasmania) and New Zealand. This species is found at depths of from over the continental shelf. It can reach a length of TL. This species is commercially important.