To counter the problem in some countries, fish farming and shrimp farming is encouraged in some places where fish are introduced in water bodies to provide an alternative source of fish. Catching thse fish will be far cheaper than catching fish in a river or sea.
During summer, the water in lakes and ponds evaporate, and it is easier to catch the fish in the water body . It also appears that in summer, these fish farmers are selling the fish in lakes and ponds which are drying up. They will usually advertise the fish for sale, in the local newspapers.
However there are reports that fish, particularly shrimp farming can damage the environment, and the fish are liable to be affected by some diseases if proper precautions are not taken.