The large kelpfish, Chironemus marmoratus, is a kelpfish of the genus Chironemus , found in southern Australia, and between North Cape and East Cape on the North Island of New Zealand, at depths down to 30 m. Their length is between 25 and 40 cm. In New Zealand, the species is known as thehiwihiwi.
The giant kelpfish (Heterostichus rostratus) is a species of clinid native to the west coast of North America, where it is found from California to southern Baja California. It inhabits rocky areas with kelp and other large seaweeds. Its diet consists of small crustaceans, mollusks, and fishes. This species can reach a maximum total length of 61 cm (24 in), and has been reported to live for 4 years. It can also be found in the aquarium trade. It is currently the only known member of its genus.