If you do not clean the stream then it will be not good because when you do not clean it then no fish will, live in the stream and the stream won't be clean. When you clean the stream then some fish can live in the stream and there would be dragonflies living there too. When people clean the stream that is good how because then dragonflies mum can lay they eggs and then the dragonflies mum will died after the day they lay they eggs, then they will come out of there eggs and then they will live in the water when they can fly. If the dragonflies have no food in the water they will get some fish in the water with there big
