Heat canola oil in heavy-bottomed skillet to 340 F.
Meanwhile, blend the cornmeal, flour, baking powder, salt, pepper, garlic & onion powder and cayenne in a large bowl.
Pat the catfish dry and dip each side in the cornmeal mixture.
Fry in hot oil, 5-7 minutes each side, until golden. Set aside to drain.
For fries, preheat oven to 425 degrees F.
Rinse well, and slice the potatoes into ½” thick wedges
Line baking sheet with baking paper and spread potato slices over.
Drizzle olive oil over potatoes, and sprinkle salt and pepper and paprika.
Bake until crispy and golden brown, 15-20 minutes, stirring partway through.