Many aquatic animals feed extensively on periphyton. The mbuna cichlids from Lake Malawi are particularly well known examples of fish adapted for feeding on periphyton. Examples include Labeotropheus trewavasae and Pseudotropheus zebra. They have scraper-like teeth that allow them to rasp the periphyton from rocks. In marine communities, periphyton food sources are important for animals such as limpets and sea urchins.  Another amphibian that feasts on periphyton are spring peepers, small chorus frogs that occupy many ponds throughout Canada and the eastern United States. Spring peepers filter periphyton from the environmental surfaces of their habitat.