The Fish Suffocate When It Rains

As the fish swim through the water, their gills help them suck the oxygen up out of the water. If the river or stream is dirty or polluted, it can make it difficult for them to suck up that oxygen in the water and they suffocate. What if it's something in the rainwater? I'm talking about road runoff. When it rains, the water washes everything from motor oil to trash to animal feces off the road,. And you think that there's something in this road runoff that's causing the fish to get sick? There's only one way to find out.