Most anglers are after the blue, channel, and flathead catfish. The blue and flathead are favored food fish. The longnose gar may reach over a meter (4 feet) in length and is predatory, as its long snout and sharp teeth suggest. 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.
Yellow cat up to 45 kilos (100 pounds) have been taken from the river, and 14-kilo (30-pound) cats are not uncommon. 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. They spawn in depressions and sheltered nooks in river banks and canyon cliffs. While catfish account for most of the recreational fishing in the Rio, many other interesting species swim the brown waters: the predatory garfish, needlenosed and shaped like a torpedo; the humpbacked carp that can survive even in limited waters; smallmouth buffalo, sheepshead, and green sunfish; the bullhead that favors quiet waters and can endure higher temperatures and lower oxygen content than most other fish; and of course the minnows, as plentiful and gregarious as sparrows, with a preference for running water and rocky or sandy bottoms.
Tips for Desert Travelers
Best Times to Visit Big Bend.
Winter days will be nippy in Big Bend’s mountains and comfortably warm in the lowlands. Snow falls in the mountains once or twice a year. Spring hits the desert lowlands in February and begins a slow ascent up the mountain heights, arriving in May. Some of the desert plants bloom throughout the year, but the most predictable displays are in springtime. Summer is problematic. If you come in the summer you will probably want to take to the mountains. Midsummer daytime temperatures in the desert and river valley generally hover above 38°C (100°F)—often well above. But up in the Basin, daytime temperatures average 29°C (85°F) and nights are cool. Autumn is usually sunny, with the air gentle and warm. The best months for running the river are November through February, both for river conditions and for avoiding summer’s intense heat in the canyons.
Climbing Hazards.
The character of the basic rock in the park is very unstable, making it unsafe for climbing. Climbing is not recommended.
Night Driving.
Be extra alert for wildlife while you are driving at night. Many creatures, particularly deer, may be blinded by your headlights so that they make no effort to get off the road.