Bluefish, a saltwater fish found along the Atlantic coast from southern Canada to the southern tip of South America. The bluefish is greenish blue above, paler beneath. It usually is about three feet (91 cm) long. Young bluefish are sometimes called snappers. The bluefish is a voracious eater of all sorts of smaller fish, and sometimes of fish nearly as large as itself. Bluefish swim in large schools and often kill many more fish than they can eat. They are prized as gamefish and make excellent eating.
The bluefish is Pomatomus saltatrix of the family Pomatomidae.