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.
| Scombroidei
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|---|---|
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| A school of sawtooth barracuda Sphyraena putnamae | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Scombriformes |
| Suborder: | Scombroidei |
| Families | |
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