Viviparus viviparus - Foto © Dr. Roy Anderson
Notopala sublineata, famiglia Viviparidae - Foto © Dean Gilligan
Viviparus viviparus - Foto © Saxifraga-Kees Marijnissen
Viviparus viviparus - Foto © Dr. Roy Anderson
Notopala sublineata, famiglia Viviparidae - Foto © Dean Gilligan
Viviparus viviparus - Foto © Saxifraga-Kees Marijnissen