Did you know?

Did you know that if u take a fish scales and u put it under a microscope u can tell how old the fish is.

Also did u know that a shark has scales that is why a shark has rough skin and this is what a shark scale looks like 

 

And did u know that a stingray has it's gills on the bottom of it body so when it swims it can breathe but if it want to go to the bottom of the sea it can't use it's gills to breathe it use  the thing on it's head to breathe well it is on the bottom of the sea.

Did u know that rainbow fish live in streams and lakes.

And did u know that salmons leave the sea to go back to the river where it was bron to lay their eggs.