The number of aquatic species residing in Alabama is unrivaled. According to the Nature Conservancy and many other groups that examine and rank biodiversity in the United States, Alabama tops these five categories:
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1st in the U.S. – Freshwater fishes – 332 kinds of fish – 27% of all fish species in North America;

1st in the U.S. – Freshwater Mussels – 180 kinds of mussels – 59% of all mussel species in North America;

1st in the U.S. – Freshwater Snails – 202 kinds of snails – 28% of all snails species in North America;

1st in the U.S. – Crayfish – 85 kinds of Crayfish – 22% of all crayfish species in North America;

1st in the U.S. – Turtles – 27 kinds of freshwater turtles – 57% of all turtle species in North America

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