Baked Veracruz-Style Fish (Pescado A La Veracruzana)

Name: Baked Veracruz-Style Fish (Pescado A La Veracruzana)
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American, Mexican, Latin American
Ingredients: 2 tablespoons olive oil plus more for baking dish; 1/4 medium onion, finely chopped (approximately 1/2 cup); 2 heaping cups 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; 1 heaping tablespoon golden raisins; 1 tablespoon drained capers; 2 teaspoons dried oregano, preferably Mexican; salt and freshly ground black pepper, to taste; 2 white fish fillets (tilapia, barramundi, cod, red snapper); Cilantro sprigs, for garnish; Lime wedges, for serving