The red-tailed boa constrictor in this case posed the risk of becoming an invasive predator and throwing the local ecosystem ...

These are the prettiest freshwater fish, from vibrant brook trout and pumpkinseed sunfish to majestic lake sturgeon. Check out how these species made our list!

When told about a strange, fanged fish that had washed ashore on an Oregon beach, the Seaside Aquarium folks knew what kind of fish it was.