Cook noodles according to package directions, omitting salt and fat.
While noodles cook, heat oil in a large nonstick skillet over medium heat. Add garlic; cook 1 1/2 minutes or until tender, stirring constantly. Add clam juice and curry paste, stirring with a whisk until smooth. Add mushrooms, tomatoes, and pepper to pan; bring to a simmer. Add fish; sprinkle with basil and salt. Cover and cook 5 minutes or until fish flakes easily when tested with a fork. Serve over noodles.