Baked Veracruz Fish (Pescado A La Veracruzana)

Name: Baked Veracruz Fish (Pescado A La Veracruzana)
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: Latin American, American, Mexican
Ingredients: 2 tablespoons olive oil (plus more for baking dish); 1/4 medium onion (finely chopped (approximately 1/2 cup)); 2 cups (heaping) cherry or grape tomatoes; 2 cloves garlic (minced); 1/4 cup green olives (halved or sliced if large); 2 tablespoons chopped pickled jalapenos plus 1 tablespoon liquid from the jar (plus 1 tablespoon liquid from the jar); 1 tablespoon (heaping) golden raisins; 1 tablespoon drained capers; 2 teaspoons dried oregano (preferably Mexican); salt and freshly ground black pepper (to taste); 2 (8-ounce) fish fillets (such as tilapia, barramundi, cod, red snapper); Cilantro sprigs (for garnish); Lime wedges (for serving)