1Place catfish in single layer in lg dutch oven. Add water to cover. Bring to a simmer over low heat. Cook 3-4 mins. Remove from heat, let cool completely. In lg saucepan, melt butter over med-high heat. Whisk in flour. Gradually add milk, whisk until smooth. Cook until thickened, about 8 min. Stir in old Bay seasoning, salt, pepper to taste, mustard, and garlic powder. In lg bowl, flake cooled catfish. Add cream sauce, bread crumbs, bell pepper, green onion, lemon juice and hot peppper sauce. Shape mix into cakes, coat w/ additional bread crumbs. In lg skillet, heat 1 tbsp oil and 1 tbsp butter over medium heat until butter melts. Cook catfish cakes 5-7 min per side, or until golden.