1Pat the Swai fish fillets dry with paper towels and season both sides with salt and black pepper.
Dredge the fillets in all-purpose flour, shaking off any excess.
In a large skillet, melt the unsalted butter over medium heat until it starts to foam.
Add the fish fillets to the skillet and cook for about 3-4 minutes on each side, or until the fish is golden brown and cooked through.
Remove the fish from the skillet and place on a serving platter.
Add the lemon juice to the skillet and stir to combine with the remaining butter.
Pour the lemon-butter sauce over the fish fillets.
Garnish with chopped fresh parsley and serve immediately.