Sarpa salpa, a fish species capable of causing long-lasting hallucinatory experiences in humans, has been caught far north of its normal range. Normally found in the warm waters of the Mediterranean and off the African west coast, Sarpa salpa is an unusual guest in northern Europe. Only three previous recordings exist from British waters, with the third being from 1983 when a single specimen was caught off the Channel Islands.

The most recent specimen of this mind altering Sparidae was caught six miles south of Polperro, Cornwall, by fisherman Andy Giles. When Giles found the strange looking creature entangled in his net he brought it back to shore to have it identified.

Picture by by Sam and Ian

“We were trawling for lemon sole but hauled up the net at the end of the day and almost immediately saw this striped fish”, Giles said. “I had never seen one before so brought it back for experts to have a look at it. But now I realise what it was – and the crazy effects it can have – perhaps I should have taken it into town to sell to some clubbers.”

Instead of selling it to clubbers, Giles could also have brought it home to the dinner table – without much risk of having any mind altering experiences. Within its native range, Sarpa salpa, commonly known as Salema porgy, is a popular food fish and suffering from hallucinations after ordering a plate of Salema in a Mediterranean restaurant is very rare.

According to marine experts, Sarpa salpa has to feed on a certain types of plankton in order to become hallucinogen. In 2006, two men were hospitalized in southern France after eating Sarpa salpa who evidently had feasted on vast amounts of psychedelic plankton before being caught.

“Plankton has very minute amounts of poison and fish that eat a great deal of it can develop this poisoning”, says Oliver Crimmen, fish curator at the Natural History Museum. Sarpa salpa are a popular fish to eat in the Mediterranean and I think the 2006 incident was a rare event.”

So, why can urge a Sarpa salpa to leave the pleasant waters of Africa and head for chilly Britain? According to James Wright, senior biologist at the National Marine Aquarium in Plymouth, the fish may simply have tagged along when some other species decided to head north, but it may also be possible that the species is on the rise in northern Europe.

“These are a fairly common fish off Tenerife, Malta and Cyprus but it is very rare to get them this far north. It could be a single fish that was shoaling with a different species, says Wright. But it could be that there are more of them in our waters.”