Centrolophidae

medusafish

Icichthys lockingtoni

Juveniles associate with jellyfish

• Tropical
• Northern Hemisphere
• Regional distribution
• Marine fish
• Pacific Ocean
• East Asia
• North America
• Deep-bodied
• Medium
• Tropical fish

Icichthys lockingtoni, commonly known as the medusafish, is a species of centrolophid ray-finned fish native to the northern Pacific Ocean, where it ranges from Japan and the Gulf of Alaska to central Baja California in Mexico. It typically occurs at a depth of 0 to 91 m (0 to 299 ft), although it has been reported from as deep as 900 m (2953 ft). Young individuals of the species are abundant offshore, often in association with jellyfish in a symbiotic relationship that is likely commensal.