Clint .... forget the flour & spices.
Just use yellow corn meal (or, at least try it alone, once). You'll actually get to taste the sweet flavor of the fish (esp fresh caught), as the corn meal doesn't add any flavor to the fish. Hands Clapping
Flour is just going to coat the meat, & may not allow as much of the corn meal to stick Doh
Spices aren't necessary, unless you're trying to cover up the taste of the entree .... and salt/pepper can be added AFTER cooking, if desired.
Corn meal breaded fish should come out of the grease as a golden color ... pan fried or deep fried ... so, if you're getting blackening of the outside, you're overcooking it. Fish have delicate meat, and really don't need to be cooked that long. It's the coatings that take time to brown up
... the fish is "done" before that, and excessive cooking time just takes the moisture out of the meat.
... cp