Scientists confirm first sighting of devil firefish in Maltese waters

Scientists have confirmed the first recorded sighting of the invasive devil firefish in Maltese coastal waters, signalling the continued spread of the Indo-Pacific predator across the Mediterranean.

The specimen was caught by a recreational angler at Migraħ Ferħa, on Malta's north-west coast. It was photographed, measured and safely released before being examined by researchers, who confirmed its identity.

Biologist Arnold Sciberras told MaltaToday that the finding indicates the species has now expanded its range into Maltese waters.

The devil firefish, also known as the lionfish, is considered one of the world's most successful invasive marine species. Its arrival has raised concerns over the potential impact on native marine biodiversity and fisheries, as the predator feeds on a wide range of smaller fish and invertebrates while facing few natural predators in the Mediterranean.

Two of the scientists behind the study: Alan Deidun (left) and Arnold Sciberras (right)

Researchers said the discovery represents an important milestone in tracking the species' westward expansion and underlines the need for continued monitoring.

The finding also demonstrates the value of citizen science, with the specimen first reported by a recreational angler.

Scientists said public reporting and continued surveillance will be crucial in determining whether the sighting was an isolated incident or the beginning of an established population around the Maltese Islands.

The study was carried out by Alan Deidun, Arnold Sciberras, Bruno Zava, Maria Corsini-Foka and Alessio Marrone.