Do all bodies of water have fish?
Do all bodies of water have fish? Fish are found nearly everywhere there is water with enough food, oxygen and cover. Near your home there should be a body of water that has fish living in it. But to catch a fish, first you must learn to understand where they are hiding. Not all fish can live in the same kind of waters.
Why I never swim in lakes?
Lakes are a bastion for bacteria, and predators.
How do lakes clean themselves?
Turnover is a natural way the lake cleans up harmful bacteria and algae. It carries dead algae down into the depths of the lake where there is less sunlight, helping to prevent algae growth. You can think of it as an escalator, moving the algae cells from the top of the lake to the bottom.