One Spine Unicornfish - Naso thynnoides

''Naso thynnoides'' is a tropical fish found in coral reefs in the Pacific and Indian Oceans. It is commonly known as the oneknife unicornfish, oneknife unicorn, thunny unicornfish, singlespine unicornfish, one-spine unicorn, or barred unicornfish. It is of value in commercial fisheries, and is also used in aquaria.