Catfish is one of the most commonly found types of fish in seafood markets and grocery stores. However, there are over 3,000 different species of catfish and the consumer may not know what species he/she is buying. In addition, a new federal regulation says that only the North American family of catfish can legally be sold as catfish. Our study will use DNA barcoding to identify which species of catfish are sold in New York City seafood markets and grocery stores.