Fishing Most of the park's native fish are of minnow size but the Rio Grande does attract anglers. The major attractions are catfish, gizzard shad, carp and suckers, the freshwater drum, and an occasional longnose gar. The complete list of fish recorded in the park and its immediate surroundings includes 35 species, including bluegill and sunfish species.
Most anglers are after the blue, channel, and flathead catfish.
The blue and flathead are favored food fish. You do not need a fishing license to fish in the national park. For advice on fishing spots and preferred methods, ask a park ranger. Channel and blue cats also provide fine sport and good eating. These deepwater species feed on aquatic plants, insects, and smaller fish, both living and dead.