Ichthyoallyeinotoxism

Overview
Ichthyoallyeinotoxism, or hallucinogenic fish poisoning, is caused by eating the heads or body parts of certain species of ichthyoallyeinotoxic herbivorous fish normally found in the Indian Pacific. The effects of eating ichthyoallyeinotoxic fishes, such as certain mullet, goatfish, tangs, damsels and rabbitfish, are believed to be similar in some aspects to LSD. Experiences may include vivid and terrifying auditory and visual hallucinations. This has given rise to the collective common name for ichthyoallyeinotoxic fishes of "dream fish".

In 2006, two men who ate fish caught in the Mediterranean were affected, and suffered hallucinations lasting for several days.