Hiodontiformes | |
---|---|
Hiodon tergisus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Cohort: | Osteoglossomorpha |
Order: | Hiodontiformes Taverne, 1979 |
Type species | |
Hiodon tergisus (Lesueur, 1818)
| |
Families[1][2] | |
Hiodontidae (mooneyes) |
Hiodontiformes /haɪəˈdɒntɪfɔːrmiːz/ is an order of ray-finned fish consisting of the two living species of the mooneye family, Hiodontidae, and three extinct genera.
These are traditionally classified within the order Osteoglossiformes, a placement some authorities still follow. Fossil study of the extinct genus Yanbiania suggests that the hiodontids separated from other osteoglossomorphs early and thus may deserve a separate order.[citation needed]