Greece has placed a bounty on the head of the world's most toxic pufferfish, paying fishermen €5.33 per kilo to hunt the invasive predator

Greece is now paying fishermen to hunt one of the most dangerous invasive species to hit the Mediterranean in years. The Associated Press reports that the Greek government is offering €5.33 per kilogram (about $2.75 per pound) for catches of the silver-cheeked toadfish, a member of the pufferfish family with human-like teeth that's been spreading rapidly through Greek waters.

The pilot project will be initially implemented in the Crete and South Aegean regions and is supported by €1.5 million of European Union funds. Margaritis Schinas, Greece's Minister of Rural Development and Food and a former European Commission Vice-President, called it the first scheme of its kind in Greece, and said it would likely expand to all Greek waters if successful.

How a fish from the Indian Ocean ended up crashing the Mediterranean
The silver-cheeked toadfish (Lagocephalus sceleratus ) belongs to the wider family of pufferfish, Tetraodontidae, and is native to the Indian and Pacific Oceans. It entered the Mediterranean through the Suez Canal, a route scientists refer to as “Lessepsian migration.” “The Biology and Ecology of the Invasive Silver-Cheeked Toadfish ( Lagocephalus sceleratus ), with Emphasis on the Eastern Mediterranean,” a 2021 peer-reviewed study published in NeoBiota, describes the species as one of the most harmful invasive fish in the Mediterranean, threatening marine biodiversity and costing fishing communities a lot of money. The fish was first recorded in the Mediterranean around 2003 and has since spread across virtually the whole basin, including the Black Sea.


Warming seas are speeding up this invasion. As ocean temperatures rise, the Mediterranean is becoming increasingly hospitable to tropical species that once could not survive there, and the silver-cheeked toadfish is one of the most visible examples playing out right now.

Why this fish is genuinely dangerous but not to swimmers
The silver-cheeked toadfish carries tetrodotoxin (TTX) in its flesh and organs, one of the most powerful neurotoxins known to science. According to a study in Food and Chemical Toxicology, “Tetrodotoxin Levels of Three Pufferfish Species (Lagocephalus sp. ) Caught in the North-Eastern Mediterranean Sea,” TTX poisoning affects the human nervous and muscular systems, causing paralysis, respiratory distress, and nausea, and there is no known antidote.

The Greek Red Cross has issued a public health warning, outlining first-aid protocols for injuries and warning that no part of the fish is safe to eat. Authorities say the fish is not dangerous to swimmers. According to a joint statement by 16 medical and tourism associations in Crete, the silver-cheeked toadfish has been present in the Mediterranean for years and is not dangerous to bathers, but to those who eat it. The aim is controlled management, not elimination.

The real damage: fishing nets and livelihoods
Beyond the health concern, the silver-cheeked toadfish is hitting Greek fishermen where it hurts most: their wallets. Its strong beak-like teeth tear through fishing nets, damaging costly equipment and spoiling the catch. The Hellenic Centre for Marine Research (ELKETHE), which drafted Greece’s national action plan for the species in 2024, also calls for a monitoring system and compensation for net damage. Greece’s ministers of Agriculture and Environment will meet on July 1 to coordinate the next steps.

A similar program is already running in Cyprus, with a payment of €4.73 per kilogram. Greece's new rate of €5.33 is up to 52% higher than that of Cyprus, in a deliberate move to create a greater financial incentive, Greece's Ministry of Rural Development and Food said. The poisonous flesh of the caught fish cannot be sold or eaten, and will be transported to designated ports, frozen and incinerated at special facilities.

Why Americans should care about this
It might seem an obscure problem, but it is a preview of what happens when warming oceans reshuffle ecosystems. The US is also fighting its own battles with invasive aquatic species, with lionfish devastating coral reefs in the Atlantic and Gulf of Mexico and Asian carp threatening the Great Lakes. Government-funded catch bounties are one management tool conservationists have debated for years in the United States.

According to a 2022 study published in Biological Invasions, this fish does more than feed on native species; it may also have cascading effects throughout the marine food web.

Greece is spending €1.5 million to try to stop a fish that warming seas helped invite in. Whether or not the bounty works, the story it tells about changing ecosystems is one that every country with a coastline should be paying close attention to.