Sardinops caerulea is a type of fish commonly known as the Pacific sardine or California sardine. While there are not many synonyms for this particular species, it is worth noting that other types of sardines may be referred to by different names. For example, the European sardine is also known as Sardina pilchardus, while the South American sardine is sometimes called Sardinella aurita. Regardless of the name, sardines are a popular fish thanks to their rich flavor and nutritional benefits. They are a good source of protein, omega-3 fatty acids, and vitamin B12, making them an excellent addition to a healthy diet.