Marsh Frog is a highly opportunistic amphibian. It lives in mixed and deciduous, forests, forest steppe, steppe. Being a semiaquatic species, the frog inhabits a wide variety of flowing and stagnant water habitats, from shallow puddles and ponds to large lakes and rivers, as well as mountain streams. The Marsh Frog prefers open, well-warmed areas with abundant herbaceous vegetation.
This frog is distributed in the country (up to 1200 m above sea-level).
   Posterior part of the tongue is free and forked. Toes webbed. Pupil of the eye horizontal. Snout moderately sharp. Dorsal coloration different tints of greyish and green, from entirely grey to green. Large dark dorsal spots vary considerably in size, number and arrangement. Light middorsal line is often present. No temporal spot. Belly greyish-white or greyish-yellow with dark spotted or blotched-like patterns, sometimes without this pattern.
   Frog's body could reach a length of 17 cm.
   Breeding starts from several days to one month after the frogs' spring appearance. The males for loud choruses, which are especially intensive at the peak of the breeding period.
   The clutch contains about 670-13000 eggs. The time of metamorphosis usually falls in April - November. Sexual maturity is attained in the 1st-4th year of life, and the maximum life span has been recorded as 5 - 12 years.
Tadpoles consume detritus, algae, and higher plants in addition to animals (mainly invertebrates) and their corpses. Benthic objects remain the most important component of their diet. Adults consume mainly terrestrial and aquatic insects. Feeding does not cease during the breeding season.
   Marsh Frog is quite voracious and sometimes attacks not only animals but even the branches of riparian vegetation moving in the wind. In fish ponds, it eats small fishes, but the intensity of predation is too low for any significant influence on the fish crop. Adults often eat conspecific and other amphibians, as well as reptiles and even small birds and rodents. Cannibalism becomes especially severe during periods of low humidity and precipitation, as well as high temperature.
   Marsh Frog is utilized as test animal in medical laboratory practice.
   During the past years, gastronomy has considerd frog's hind thighs as delicacy, so for that reason Marsh Frog is netted and exported on the foreign market. In this connection, the after-breeding taking is permitted.