“…Invasive and alien species keep being recorded from the aquatic ecosystems of Morocco, leading to the formation of new communities of species with diverse interactions and unpredictable changes, especially in freshwater ecosystems including the Sebou River basin (Mabrouki et al, 2019a, b;2020;Taybi & Mabrouki, 2020;Taybi et al 2020a, b;2021a). This unique ecosystem is home to a diverse array of animal and plant species, many of which are endemic, rare and vulnerable, including freshwater molluscs such as Ifrania zerroukansis Glöer, Mabrouki & Taybi, 2020, Pikasia smenensis Taybi, Glöer, & Mabrouki 2021 and Gyraulus marocana Mabrouki, Glöer & Taybi, 2022(Glöer et al, 2020Taybi et al, 2021b;Mabrouki et al, 2022). Including the Moroccan endemic Unionidae such as Unio foucauldianus Pallary, 1936 and the critically endangered Pseudunio marocanus (Pallary, 1918), these freshwater bivalves have particularly suffered from the degradation of streams and water bodies and are threatened to varying degrees (Gomes-dos-Santos et al, 2019;Sousa et al, 2019).…”