How do fish get into literally every body of water, no matter how remote or isolated?

Question

I’ve never gotten the full explication on this. I hear animals bring the eggs, esp birds but that doesn’t really make sense to me. Don’t the eggs need to be fertilized in the water?

In: 7

Answer 1

Bird eat fish

Bird poop fish eggs

or

Bird grab fish

Bird carry fish

Bird drop fish on accident into new water