* Fish have been around for 500 million years.
* Can fish swim backwards? Yes! A number of fish can, but even they usually don’t. Those that can are mostly members of the eel family.
* Do they ever get seasick? They can if they are stored aboard a rolling ship or shaken enough in a pail.
* Some fish like sharks don't possess an air bladder. To keep afloat they must either swim continually or rest on the bottom.
* The largest fish is the great whale shark which can reach 15 meters in length.
* Some species of fish can fly (glide) while others can skip along the surface. The weirdest ones can even climb rock!
