Pontchartrain Blackened Catfish

Name: Pontchartrain Blackened Catfish
Ingredients: 4-6 (6-oz.) catfish fillets; Salt, red/black pepper, garlic powder; Paprika; 1 T. sugar; Canola oil; 6 T. butter; 2 T. Creole seasoning; 1 t. red pepper flakes; 2 T. minced garlic; 1 stalk celery, diced; 1 medium onion, diced; ½ green bell pepper, diced; 1 (8-oz.) container sliced baby portabella mushrooms; 1 T. creole mustard; ½ c. dry white wine; 1 T. flour; ½ lb. medium shrimp, peeled, deveined and cut into ½ pieces; ½ lb. lump crabmeat; ½ c. chopped fresh parsley; Juice of 1 lemon; Lemon wedges, garnish