In the Native Trout Conservation Area, anglers must catch and release all native species, but can keep up to five non-native fish of any size per day. All lake trout in Yellowstone Lake must be killed.
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Swimming in Yellowstone National ParkYellowstone National Park isn't exactly known for its swimming holes. Due to the thermal activity in the park, most rivers and lakes in Yellowstone are closed to swimmers. However, if you're up for an adventure, the park has opened up a few alluring areas to the public.
Let's take a look at a few things NOT to do in Yellowstone National Park: Never approach (or pet) wildlife. Never go into the hot springs. Never leave the bear spray in the car.
Proper food storage is the most important precaution you can take to avoid a bear encounter in a Yellowstone campground. Be sure to store any food in a locked vehicle or in a provided Bear Box.
If you do any hiking or camping in Yellowstone, you SHOULD bring bear spray. Generally, you don't need bear spray when visiting the popular and crowded geyser areas and villages, such as Old Faithful and Canyon Village.