This fish the "Blue Chub" is called the dream fish.
Quote:
In the Philippines one of the names for the blue seachub is dapog "open fire," which probably suggests the strong "peppery" qualities of this fish when eaten.
Recently, Caulerpa taxifolia invaded the Mediterranean, where it is not native, and was apparently was consumed by a local herbivorous fish known as the Sarpa salpa. Two people reported having hallucinations and nightmares after consuming the fish.
In the Pacific, such hallucinogenic fish species are called "dream fish."
Algae blooms can also cause many common edible species to become toxic and sometimes hallucinogenic.
Source:
http://sambali.blogspot.com/2006/08/...-glossary.html