July 17, 2026, 2:11 pm | Read time: 2 minutes
They are getting bigger, spreading further, and increasingly putting the delicate balance in Lake Garda under pressure. We’re talking about giant catfish. These massive predators present growing challenges for experts. Authorities are now responding with new measures to curb their spread and better protect endangered species.
Catfish weighing up to 80 kilograms are causing increasing problems in Lake Garda. The invasive fish species has few natural enemies there, allowing it to multiply rapidly. At the same time, these predators feed on numerous animals living in the lake. Especially in the southern part of Lake Garda between Sirmione and Lazise, catfish have now established themselves. Experts fear they could further spread to the north of Italy’s largest lake.
Rare Fish Species Particularly Endangered
Among the biggest losers is the Carpione. This salmonid species is found exclusively in Lake Garda and has been considered highly endangered for years. In addition to sardines and perch, ducks and even turtles are part of the catfish’s diet.
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Region Focuses on Targeted Control
The Lombardy region now plans to intensify efforts against these predators. According to the daily newspaper “Brescia Oggi,” specially trained selection fishermen are to specifically reduce the population of giant catfish.
They will be supported by a new app that records the location, size, and number of caught fish, and even their stomach contents. The collected information is intended to help scientists analyze the spread of catfish more precisely.
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New Measures Planned to Curb Spread
In the future, divers will also be deployed in the hunt for catfish. Additionally, nets with larger meshes are planned to catch mainly the large predators while allowing smaller native fish species to escape.
Communities around Lake Garda are also calling for stricter fishing regulations. Fixed fishing days are planned, during which targeted hunting of catfish will take place. Floriano Massardi, chairman of the agriculture committee in the Lombardy Regional Council, warns in “Brescia Oggi” that catfish are causing increasing damage to the ecosystem. Without decisive countermeasures, a point could be reached where the development can no longer be reversed.