Ceviche Tostadas {Authentic Flavor}

Ingredients

• 1 lb white fish (red snapper, sea bass, kingfish, halibut, cod)
• 1/4 red onion, sliced very thin
• 2 tbsp jalapeno, diced (optional)
• 3/4 cup cherry tomatoes, halved
• 1/2 cup lime juice (more if needed)
• 1 avocado, chopped
• 3/4 cup cherry tomatoes, chopped
• 1/4 cup cilantro, chopped
• Salt and pepper
• 8 corn tortillas
• Cooking spray