Toxic pufferfish spread in Mediterranean raises safety and fishing concerns

The invasive Lagocephalus sceleratus is expanding its range in Greek waters, prompting warnings from health authorities and local fishers about increased aggression and toxicity.

By Handelsavisen Newsroom · Automated 2026-07-03 08:45 UTC · 1 min read

The toxic pufferfish Lagocephalus sceleratus is spreading rapidly in the eastern Mediterranean, particularly around Greece and Crete, raising alarms among scientists and local fishing communities.

The invasive species, which migrated from the Red Sea, is becoming increasingly common in coastal waters, where it poses risks to both marine ecosystems and human safety.

Reports indicate that the fish has become more aggressive, with incidents of bites causing severe injuries.

Local authorities and health organizations, including the Red Cross, have issued warnings to swimmers and beachgoers to exercise caution.

The fish’s toxicity and lack of natural predators in the region make it a significant concern for public safety and marine biodiversity.

The spread of Lagocephalus sceleratus is part of a broader trend of invasive species moving into the Mediterranean via the Suez Canal, a phenomenon known as Lessepsian migration.