Theodoxus fluviatilis is also the prey of some birds .
Predators of Theodoxus fluviatilis include the common roach ( a freshwater fish ) , Rutilus rutilus .
Theodoxus fluviatilis is also the Theodoxus fluviatilis of some birds .
Predators of Theodoxus fluviatilis include the common roach ( a freshwater fish ) , Rutilus rutilus .