Freemanichthys thompsoni is a species of poacher native to the northwestern Pacific Ocean. It is found at depths of from 10 to 300 metres. This species grows to a length of 22 centimetres TL. This species is the only known member of its genus. Order: Scorpaeniformes, Family: Agonidae, Genus: Freemanichthys, Species: Freemanichthys thompsoni (D. S. Jordan & C. H. Gilbert, 1898).