Problem 2: Leopard Frogs. A biologist nets 40 leopard frogs from a local pond, tags them with a microchip, and releases them unharmed. A week later, she nets 65 frogs from the same pond, including 26 with tags. Based on the Lincoln−Peterson index, estimate the number of leopard frogs in the pond.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.