Scombroidei Temporal range: Early Palaeocene–Recent PreꞒ Ꞓ O S D C P T J K Pg N
A school of sawtooth barracuda Sphyraena putnamae
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scombriformes
Suborder:	Scombroidei
Families
Sphyraenidae (barracudas) Gempylidae (snake mackerels) Trichiuridae (cutlassfishes) Scombridae (mackerels and tunas) Xiphiidae (swordfish) Istiophoridae (billfish)

Scombroidei is a suborder of the order Scombriformes. The suborder includes the barracuda, tuna, and mackerel, as well as the billfish. Regular Scombrids are observed to have large heads, eyes, and mouths. In most cases, the second dorsal fin will develop before the development of the first.