Red Pearl

Rdečeperka (Scardinius erythrophthalus) plava čisti, plitvi vodi z vidnimi vodnimi rastlinami in peščenim dnom

Red-eyed rudd (Scardinius erythrophthalus) inhabits all types of standing waters and the lower parts of flowing waters. Within the park it does not occur naturally. It was introduced into Cerknica Lake as food for pike, but now it threatens it.