Fishing Charters in Texas
Browse fishing charters in Texas that can help you catch flathead catfish.
Best Time to Catch Flathead Catfish
Flathead Catfish can be caught year-round in Mertens. Right now in March, activity is Slow.
Seasonal Activity Chart

Flathead Catfish
If you're after flathead catfish near Mertens, Texas, your best bet is targeting the larger creeks and rivers that flow through the region. While no major reservoirs are immediately adjacent, these smaller waterways can hold some surprisingly large flatheads. The key is finding deep holes and structure, particularly around downed timber or rocky outcroppings. Live bait is the name of the game for flatheads; sunfish or small bullheads are local favorites. Summer nights are the most productive time to target them. A good starting point is to look for bridge crossings where you can access the creek. Be aware of water levels, as heavy rains can quickly change conditions. Always check local regulations for size and bag limits. Patience is key when flathead fishing – it can be a waiting game, but the reward of landing a big one is well worth it.
Plan a Trip to Mertens
See what's biting in Mertens, find top-rated guides, and estimate charter costs.
How to Catch Flathead Catfish
Detailed fishing techniques coming soon for Flathead Catfish in Mertens.
Flathead Catfish Fishing Regulations in Texas
Open Season
Year-round
Daily Bag Limit
5 per day
Size Limit
18-inch minimum
License Required
Freshwater fishing license
For catfish, only 1 may be 30 inches or greater in length.
⚠️ Always verify current regulations with the Texas state wildlife agency before fishing.
Related Species in Texas
Frequently Asked Questions
What's the minimum size flathead catfish I can keep when fishing around Mertens, TX?
In Texas, you can only keep flathead catfish that are 18 inches or longer.
What's the best bait for catching flathead catfish near Mertens?
Live bait is generally the most effective for flathead catfish. Try using live sunfish, bullheads, or other small fish native to the area.
How many flathead catfish am I allowed to keep per day in Texas?
The daily bag limit for flathead catfish in Texas is 5 fish per person.
Is a freshwater fishing license required to catch flathead catfish in Texas?
Yes, you'll need a valid Texas freshwater fishing license to legally target flathead catfish around Mertens.
More Flathead Catfish Fishing in Texas
Other Species to Fish in Mertens
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