The ecological features of invasive alien species are crucial for their effective management. However, they often lacking in newly invaded ecosystems. This is the case European catfish Silurus glanis L. Lake Maggiore, where present since 1990, but no scientific information available on its ecology. To start filling this knowledge gap, 236 (67 cm to 150 total length) were collected, measured, an...

The establishment and proliferation of non-native fish species can have a range effects within the local ecosystem, including alteration food webs, nutrient cycling, pathogen dynamics predation, sometimes also resulting in changed behavior distribution native species. Knowledge about movements activity patterns is important to understand animals their new environment. Wels catfish (Silurus glan...

The European Standard EN 14757 recommends gillnet mesh sizes that range from 5 to 55mm (knot-to-knot) for the standard monitoring of fish assemblages and suggests adding gillnets with larger mesh sizes if necessary. Our research showed that the recommended range of mesh sizes did not provide a representative picture of fish sizes for larger species that commonly occur in continental Europe. We ...