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Generally green with black markings, the Guadalupe bass is smaller than other black bass, the largest individuals weighing only around 3.5 pounds. Learn more
The small Leon Springs pupfish is vanishing from its historic range. Diamond Y Spring Preserve contains the last of its natural habitat. © John Karges/The Nature Conservancy
Growing only two inches long, the Leon Springs Pupfish is a small, rare fish found only in Pecos County, Texas. Learn more
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