From a local group post, I think it looks most like *Agkistrodon piscivoris* based on the pattern and tail taper, but the head is a bit grainy. [louisiana]1yr ⋅ MMButt ⋅ r/whatsthissnake
Doesn’t look like Agkistrodon to me, confirm? — Caught a cottonmouth with my buzzbait11mo ⋅ MMButt ⋅ r/whatsthissnake