 In Rwanda it has been recorded in the Ruzizi basin and the Upper and Middle Akagera River, on either side of the Rusumo Falls.The International Union for Conservation of Nature designate "L. somereni" as a least-concern species, saying it is "relatively widespread", although it's possible some subpopulations might be at risk from various local threats such as increased farming.It is omnivorous, although primarily herbivorous; it mostly eats aquatic plants and filamentous algae.