A poisonous invasive fish has been spreading through Greek waters for over two decades, but a wave of media panic this s...

A poisonous invasive fish has been spreading through Greek waters for over two decades, but a wave of media panic this summer is giving most people the wrong picture of the actual threat. The silver-cheeked toadfish, known in Greece as the "lagokefalo", entered the Mediterranean through the Suez Canal and was first recorded in Greek waters in 2005, starting in Crete and the Dodecanese. It has since spread to every corner of the Mediterranean, driven by rising sea temperatures, its high reproductive rate, and the complete absence of natural predators. Countries like Egypt, Syria, Israel, Lebanon, Turkey, and Cyprus already have far larger populations of the fish than Greece does. The fish carries tetrodotoxin, a powerful neurotoxin found in its flesh, skin, and organs. It cannot be destroyed by cooking or freezing, and consuming the fish is banned. A published study covering the entire Eastern Mediterranean over a 20-year period recorded 144 poisoning cases and 27 deaths, all linked to eating the fish, not to contact in the water. The panic over swimmer attacks is largely media-driven, according to Dr. Nota Peristeraki, a marine biologist at the Hellenic Centre for Marine Research. Over that same 20-year period across the entire Eastern Mediterranean, confirmed attacks on swimmers numbered just 28. She says the actual danger is real but narrow: the fish is deadly if eaten and destructive to fishing gear, but it does not hunt swimmers. The economic damage to fishermen is documented and serious. The fish's four large teeth, which form what researchers describe as a parrot-beak, shred nets, cut lines, and devour catches already trapped in gear. A study found average annual losses of around 8,500 euros per fisherman in damaged equipment, lost catch, and unpaid repair hours. Fishermen have been raising the alarm since at least November 2025, when they flagged the problem during agricultural protests. Greek fishing industry officials and marine scientists are calling for a coordinated national response, including subsidized fishing programs, strict protocols for handling and disposing of the fish safely, and a state-led public information effort to replace pani...