Aji, also known as horse mackerel, is a popular fish found in warm waters, particularly in the Pacific and Atlantic Oceans. It is characterized by its slender body, sharp fins, and a distinctive blue-green back. Aji is often enjoyed for its mild flavor and firm texture, making it a favorite in various culinary dishes. In Japanese cuisine, aji is commonly served as sashimi or grilled, highlighting its fresh taste. It is also rich in omega-3 fatty acids, which are beneficial for heart health. Aji is a versatile fish that can be prepared in numerous ways, appealing to many palates.