I do not think that these hatchling trout would stay in the white and red zones. Most areas have a large spring near the headwaters of the blue zone. As water warms in the summer, they would move up to these areas. Also, in the fall, their natural instincts make them move upriver for spawn time. It would be great for the blue zone. Routine stockings keep fish, for a short period of time, in the red and white waters. Otherwise, bait and hardware fishermen, would have slim pickings. Do you have the red, white and blue zones in Iowa, or is it anything goes? It would be a nice concept, but I am doubtful that it would work in Missouri streams.