Synonyma
Pseudobythites Meek & Hildebrand, 1928 ― Pseudobythites sanguineus Meek & Hildebrand, 1928
Typový druh
Petrotyx hopkinsi Heller & Snodgrass, 1903.
Původní popis
Heller E. & Snodgrass R. E. 1903. Papers from the Hopkins Stanford Galapagos expedition, 1898-1899. XV. New fishes. Proc. Wash. Acad. Sci. v. 5. 189-229.