Why are Brown Trout being introduced into the Hudson river when the native trout, Brook Trout is already present?

Abstract: The purpose of our paper is to investigate why brown trout are being introduced into the Hudson River when the native species, brown trout is present. Out study began when we went to the Cold Spring's hatchery where we stripped Brown trout eggs. We brought the eggs to our tank in our classroom where we planned to raise them. We monitored the tank daily and removed dead eggs to prevent disease. Once four weeks …

…deeming the trout mature and healthy enough to handle sunlight. There is still small amount of our original trout left. We can tell by the fact that our trout are slightly smaller. We feed them twice a day, change 10% of the water weekly and check the ammonia and pH levels daily. We will continue to raise our Brook trout until June when we will release them into the back into the wild in Hudson River.