Spring Pea Green Curry with Black Cod and Strawberry

Name: Spring Pea Green Curry with Black Cod and Strawberry
Ingredients: 1 yellow onion, diced; 4 teaspoons vegetable oil, divided, or as needed; 1 teaspoon salt, or more to taste; 3 tablespoons green curry paste, or more to taste; 2 cups chicken broth; 1 pound sugar snap peas, trimmed; 1 tablespoon fish sauce; 1 splash lime juice, or to taste; 1 pound boneless black cod, cut into eight 2-ounce pieces, skin scored 1/8-inch deep; 1/4 cup diced strawberries; 2 teaspoons thinly sliced fresh mint leaves