The Vikos-Aoös area also contains a variety of suitable habitats that support dense populations of amphibians and reptiles. Vipera ursinii lives in the subalpine meadows and is considered a threatened taxon. The amphibian alpine newts (Triturus alpestris), living in the alpine lakes of the Tymphe region, mostly in Drakolimni, are associated with local folktales of dragons and dragon battles. Yellow-bellied toads (Bombina variegata) are also common in that same area. Numerous fish, such as brown trout, roach, and barbel are to be found in the park's rivers. Regarding invertebrate species, due to the structural complexity of the forests and the close proximity of various small biotopes, i.e. streams, ponds, forest openings, rocky sites, dead trees, old pollards, and coppices, a very diverse fauna exists, especially at the various ecotones, which often includes very specialized species.