Prepare Fresh Mexican Salsa; set aside.
In a small bowl, combine garlic, oregano and salt.
Beat in lime juice, then olive oil.
Rinse fish steaks; pat dry with paper towels.
Rub garlic mixture into rinsed steaks.
Let stand at room temperature while preheating grill; grease rack or hinged wire basket.
Place coated steaks on greased rack or in greased basket; place 4 to 6 inches above hot coals or high heat.
Turning once, grill 7 to 10 minutes or until fish tests done.