Marsh Frog

Marsh Frog, Pool Frog and Edible Frog are very similar in appearance. The Edible Frog is the fertile hybrid of the Pool Frog (Pelophylax lessonae) and the Marsh Frog. It is believed that during the ice ages the population of the common ancestor of both species was split into two. These populations diverged, but remained genetically close enough to be able to create fertile hybrids.

In Bulgaria Edible Frog is rarely met far from Danube river, so this is most probably not an Edible Frog.