The genus Eucinostomus, commonly known as the pinfish, is a group of marine fishes found in warm waters of the Atlantic and eastern Pacific. These small fish are often used as bait and are a valuable food source for many larger species. Some synonyms for the genus Eucinostomus include Acabarius, Acanthostomus, Diplodus, Gobailuropsis, Gobioesox, Heteroconger, and Sciaena. Despite their many names, pinfish are easily recognizable by their spiny fins and distinct silver and yellow coloring. They play an important role in the marine ecosystem and have been studied extensively for their behavior and interactions with other species.