Invasive weatherfish (Misgurnus bipartitus) may sound the death knell for its native relative (M. fossilis) in Belgium

Until recently, Belgium was spared from the establishment of Asian weatherfishes, globally spreading IAS by intentional and unintentional spillover from the food and aquarium trade. In spring 2019 however, some individuals were captured in a small pond in a nature reserve close to an area across the border with The Netherlands where a proliferating population was already known to exist since at least 2012. This species was formerly regarded as the in Europe already well-established oriental weatherfish (Misgurnus anguillicaudatus Cantor 1842) but genetic analysis identified it as the northern... Mehr ...