The genus Sphyraena belongs to the family Sphyraenidae, the order Perciformes, class Actinopterygii, phylum Chordata and kingdom Animalia. The genus Sphyraena is the only genus in the family Sphyraenidae.
Sphyraena sphyraena is normally a pelagic species found high in the water column, but smaller fish are often found near the bottom of the water column. The main food is other fish but sometimes includes cephalopods and crustaceans. They are a social species and large groups of Sphyraena sphyraena could number between ten and a few hundred.
Sphyraena sphyraena has a long, fairly compressed body which is covered with small, smooth scales. It has a large mouth with a projecting lower jaw. The jaws are lined with prominent sharp teeth. It is dark above and silvery below with a yellow band running parallel to the lateral line. They are normally around 30 to 60 cm in length and weigh 6 kg but there are records of fish 165 cm long and reaching weights of 12 kg or more.
The barracuda gill covers have no spines and are covered with small scales. Their two dorsal fins are widely separated, with the anterior fin having five spines, and the posterior fin having one spine and 9 soft rays. The posterior dorsal fin is similar in size to the anal fin and is situated above it. The lateral line is prominent and extends straight from head to tail. The spinous dorsal fin is placed above the pelvic fins and is normally retracted in a groove. The caudal fin is moderately forked with its posterior edged double-curved and is set at the end of a stout peduncle. The pectoral fins are placed low on the sides. Its swim bladder is large.
Photo taken by Brian Azzopardi