Seguin, Texas, offers exceptional fishing opportunities centered primarily around the Guadalupe River, renowned as one of America's top trout streams and the southernmost trout fishery in the United States. This tailwater below Canyon Lake Dam provides year-round cold water releases, creating ideal conditions for trophy-sized rainbow and brown trout, with fish commonly reaching 12–14 inches and exceeding 20 inches. Managed as a protected trophy fishery, the Guadalupe requires artificial lures or flies and enforces a strict one-trout-over-18-inch daily limit to sustain its quality.

Beyond trout, the Guadalupe River and surrounding waters teem with Largemouth Bass, Channel Catfish, Blue Catfish, and Redbreast Sunfish. The region's diverse ecosystem supports both wade and float fishing, with professional guides offering drift boat access through scenic stretches between Canyon Lake and Seguin. Public access points like Guadalupe Park and seasonal leases ensure anglers can experience these productive waters, while local charters provide expertise across inshore, nearshore, and lake environments tailored to all skill levels.

From early spring through late fall, Seguin's mild-to-warm climate facilitates exceptional freshwater angling. Waters are stocked annually by Texas Parks & Wildlife and Trout Unlimited, bolstering natural populations. Whether pursuing bass with plastic worms, catfish with stink baits, or trout on fly gear, Seguin's unique blend of stocked trophy fisheries and natural biodiversity delivers memorable fishing adventures just minutes from San Antonio.