Obviously, fish are some of the most difficult wildlife to observe, but with determination and good timing, some of the more spectacular or interesting native fish species can be added to your park wildlife “I-saw-that” list. The most famous and showiest native fish are the salmon and trout that glide through park streams. Most parks salmon and trout species spend the majority of their lives at sea. But, during November through February, streams fill with the run of spawning fish. Fish - Redwood National and State Parks (U.S. National Park Service)