Process first 9 ingredients in a food processor until finely chopped.
Spread 2 teaspoons spice mixture evenly over both sides of each fillet. Cover and chill 30 minutes.
Cook fish, in batches, in hot vegetable oil in a large nonstick skillet over medium-high heat 5 minutes on each side or until fish flakes with a fork. Serve with fresh lemon or lime wedges, if desired.