| Abstract |  | | | "Freshwaters are also home to a tremendous diversity of fish, amphibians, aquatic plants, invertebrates, and microorganisms. The Amazon River alone contains an estimated 3000 species of ì
fish--only 25 percent less than the total number of mammals ì
worldwide. And freshwater biodiversity is among the most poorly ì
known on Earth. Scientists believe that Thailand may have as manyì
as 1000 species of freshwater fish, but only some 475 have ì
actually been recorded." |
