Ictaluridae, Gill, 1861

Ictaluridae View in CoL

The brown bullhead Ameiurus nebulosus (Le Sueur, 1819) is a non-native species with a limited distribution in Norway. The only published information is actually on its national distribution ( Hesthagen and Sandlund 2007, Hesthagen and Brabrand 2018). The brown bullhead has a very constricted distribution, and it does not seem to have expanded much since the early 1900s (Huitfeldt-Kaas 1918). However, some expansion has happened – mainly locally. The brown bullhead has been categorized as an non-native species with a limited potential for negative ecological effects ( Forsgren et al. 2018). In spite of it being a non-native species in Norway there is no information on its ecology in Norwegian lakes and thus also no studies that can document how and to what degree it influences other fish species or other organisms.