When you and I take a deep breath, we pull air into our lungs. That’s because humans are mammals. But fish aren’t mammals. They usually don’t breathe air. They usually don’t have lungs. That’s what I ...

The old idiom of being a fish out of water is never a positive thing. Instead, it paints a picture of being uncomfortable or awkward. This is how most fish feel when they are removed from their ...

Add Yahoo as a preferred source to see more of our stories on Google. If you see it, kill it. An invasive fish species is harming the Mississippi ecosystem, and you can help stop it. Northern ...