Betta splendens

A tropical pet fish that needs a heated, filtered, properly set up tank, not a little bowl.
They breathe air from the surface with a special organ, which is how they survive in puddles in the wild.
This one is genuinely harmless to people. Still look with your eyes and let it go about its day.
Always ask a grown-up before you touch any animal or plant. If something bites or stings you, tell an adult right away.
Source: PetMD
Read more about the betta fish at Wikipedia.