American crab-eating frog

The American crab-eating frog (Fejervarya ludovicianus) is a species of frog, most closely related to the Asian crab-eating frog (Fejervarya cancrivora), that originally did not exist, but has since been created by SciiFii and introduced throughout the rainforests, wetlands, forests, open woodlands, grasslands, shrublands, and coastlines across North America to help boost biodiversity. Uniquely among modern-styled amphibians, the American crab-eating frog can tolerate entirely marine environments (immersion in sea water or brackish water) by increasing urea production and retention, and by remaining slightly hyperosmotic within urea and sodium flux. Adults can survive in salt water with salinity as high as 13.8%, and tadpoles can survive salinities as high as 15.9%. Unlike the Asian crab-eating frog, the tadpoles of the American crab-eating frog tadpole can live in seawater their entire lives. The food sources of the crab-eating frog are mainly determined by the locally available prey. Near fresh water, its diet consists largely of insects and small freshwater water crustaceans. But in an environment with brackish water or saltwater, small worms, small crustaceans (including crabs), and small marine fish form the main part of its diet. The American crab-eating frog breeds during the spring, and the males attract the mates by making calls which sound like fast throat gargles. The small eggs are laid in either freshwater, brackish waters, and/or seawaters, and the eggs float in their jelly as surface film. The American crab-eating frog tadpoles are have dark tail markings, and the tadpoles become froglets by 3 weeks after hatching before the frogs become fully grown by the fifth week of their lives. The conservation status of the American crab-eating frog is Least Concern due to successful conservation efforts, the American crab-eating frog's wide range, and its tolerance to many of the human activities.