Freshwater Fish Threatened (IMAGE)

American Association for the Advancement of Science (AAAS)

Freshwater Fish Threatened

Caption

Guppies, Poecilia reticulata, are an example of an invasive fish species, and they now outnumber the endangered Mexican fish, Zoogoneticus tequila, by 6 to 1 in the pond where the last remaining population is found. This image relates to an article that appeared in the Sept. 4 issue of Science, published by AAAS. The study, by Dr. A.E. Magurran at University of St. Andrews in St. Andrews, UK, was titled, "Threats to Freshwater Fish."

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