I've tried this with walleye and perch - both very good...
Ingredients
1/4 Cup Olive Oil
1-1/2 Teaspoons Chilli Powder
1-1/2 Teaspoons Dried Oregano
1/2 Teaspoon Ground Cumin
1/4 Cup Freshly Chopped Cilantro Leaves
1lb Fish Filets
Salt
Tortillas, Salsa, Guacamole, Limes etc.
Pour the oil, spices and cilantro into a bowl and mix well. Pour the mix into a freezer bag and put in the fish. Coat the fish with marinade, seal and leave it in the fridge for at least 2hrs. I have left mine in overnight.
Put the fish in a non-stick pan over a medium high heat, cook for 4 mins undistirbed, turn and then cook for another 2 mins. Add salt to taste. Flake the fish are nice done.
Assemble the tacos and serve....yum!