In some developing nations, the percentage of animal protein from the fish in the diet can be high as

People in some countries eat little or no meat. They are getting much of their protein from vegetarian protein sources. 
Fish is one of the major sources of animal protein around the world.
Fish is the main source of animal protein in many developing countries, providing over 50 percent of the animal protein consumed in some areas, according to the Food and Agriculture Organization. 
In some developing nations, the percentage of animal protein from the fish in the diet can be high as the percentage of animal protein from red meat (beef and pork) in America.