Because there is in the world is in the Chao Phraya basin, basin of Thailand was the source animal species. The result of the country's economic and social development, expand.
Since there is only one in the world is in the Chao Phraya basin in Thailand in the past had been the source of many marine species. The results of the economic and social development of the country grew.
Because it is the only place in the world in the Chao Phraya River basin basin is important in in the past, a source of aquatic animals. The result of economic and social development of the country expanded.