Fish alone is one the healthiest foods on this planet. Any body of water that has fish could have fish that are suitable to eat. If the fish alone is eatable. Look at the water condition,and you could tell if the fish is suitable. It could be a pond next to a restroom but if the water quality is good believe that the fish is good. If it is the biggest prettiest lake on earth if the water quality is horrible the fish probably aren't healthy to eat.
Fish alone is one the healthiest foods on this planet. Any body of water that has fish could have fish that are suitable to eat. If the fish alone is eatable. Look at the water condition,and you could tell if the fish is suitable. It could be a pond next to a restroom but if the water quality is good believe that the fish is good. If it is the biggest prettiest lake on earth if the water quality is horrible the fish probably aren't healthy to eat.
the mercury comes from Rain, I would think a fish that ate other fish are the most contaminated, because it stays in your body, just like a cow eats grass, then a lion eats the cow, the lion will get concentrated mercury