The introduction and spread of alien fish species pose a major threat to native communities and ecosystem functioning in freshwaters. Black bullhead is one of the most successful invaders in European waters with several detrimental effects on native biota and ecosystems. In this study. we used stable isotope analysis to compare the body size and season-dependent diet. https://lockdownsecuritycanada.shop/product-category/most150-optical-mercedes-pre-amp/