rana esculenta, the green frog, in its natural aquatic habitat.

rana esculenta green frog natural aquatic habitat species amphibian water environment lentic ecosystems freshwater european greenbrown marshland wetland areas ponddwelling pool webbed feet conservation waterdwelling animals life cycle tadpole metamorphosis selection pond vegetation eggs predators diet insectivorous amphibious breeding spawning vocalization croaking territorial behavior hibernation camouflage population biology anatomy frogs