Sprinkle salt evenly on fish. Sprinkle sesame seeds on both sides of fish, pressing seeds gently into fish.
Heat oil in a large nonstick skillet over medium-high heat. Add fish; cook 2 minutes on each side or until fish flakes easily when tested with a fork. Remove from pan, and keep warm.
Add green onions and soy sauce to pan; sauté 3 minutes. Spoon over fish.
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