Wash hands with warm, soapy water for 20 seconds.
Combine tomatoes, onion, peaches, cilantro, salt, and lemon/lime juice in a bowl. Set in the refrigerator to let flavors combine.
Cook rice according to package instructions.
Cook fish according to package instructions. Spray a skillet or baking sheet with nonstick spray before cooking. Try baking, grilling, or pan-searing fish for different textures. Fish is cooked when it reaches 145°F on a food thermometer.
If fish has skin, remove it after cooking.
Divide rice and fish among 4 plates. Top with fruit salsa.