How many arms do cephalopods have? Posted on 2012/06/012012/06/04 by TheFishVet - Richmond's School of Fish Octopi have 8 arms.Squid and cuttlefish have 8 arms and 2 tentacles. The nautilus has up to 90! Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Like Loading... Published by TheFishVet - Richmond's School of Fish Aquatic veterinary medicine, pathology and educational services for fish. A repository for useful information and events. View all posts by TheFishVet - Richmond's School of Fish