The native brook trout that once crowded the cool-running streams of the Great Smoky Mountain National Park were so devastated by logging, acid rain, and competition with non-native trout that park officials made the fish off limits to catch-and-keep fishing for 30 years. This past April, the ban was lifted on an experimental basis after studies concluded that angling had little impact on the brookie population. Now, park managers are considering permanently lifted the prohibition, with a catch-and-release option should the trout’s number begin to dwindle. Here’s the full story.