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Mooneye Temporal range: Ypresian - Recent 49.5–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Hiodon tergisus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Hiodontiformes
Family:	Hiodontidae Cuvier & Valenciennes, 1846
Genus:	Hiodon Lesueur, 1818
Species
Hiodon alosoides †Hiodon consteniorum †Hiodon falcatus †Hiodon rosei Hiodon tergisus †Hiodon woodruffi ?†Hiodon shuyangensis
Synonyms
Amphiodon Rafinesque, 1819 Clodalus Rafinesque, 1820 Elattonistius Gill & Jordan, 1877 †Eohiodon Cavender, 1966 Glossodon Rafinesque, 1818

Hiodontidae, commonly called mooneyes, is a family of ray-finned fish with a single included genus Hiodon. The genus comprise two extant species native to North America and three to five extinct species recorded from Paleocene to Eocene age fossils. They are large-eyed, fork-tailed fish that superficially resemble shads. The vernacular name comes from the metallic shine of their eyes.

The higher classification of the mooneyes is not yet fully established. Some sources have place them in their own order, Hiodontiformes, while others retain them in the order Osteoglossiformes.

Species

• Hiodon alosoides (Rafinesque, 1819)

The goldeye, Hiodon alosoides, is widespread across eastern North America, and is notable for a conspicuous golden iris in the eyes. It prefers turbid slower-moving waters of lakes and rivers, where it feeds on a wide variety of organisms including insects, crustaceans, small fish, and mollusks. The fish has been reported up to 52 centimetres (20 in) in length.

• †Hiodon consteniorum Li & Wilson, 1994
• †Hiodon falcatus (Grande, 1979)
• †Hiodon rosei (Hussakof, 1916)
• Hiodon tergisus Lesueur, 1818

The mooneye, Hiodon tergisus, is also widespread across eastern North America, living in the clear waters of lakes, ponds, and rivers. It consumes aquatic invertebrates, insects, and fish. Mooneyes can reach 47 centimetres (19 in) in length.

• †Hiodon woodruffi Wilson, 1978

An Early Eocene, Ypresian to Late Eocene, Lutetian species. Hiodon woodruffi was described from fossils found in the Klondike Mountain Formation, Washington and Horsefly shale, British Columbia. Further finds have increased the known paleogeographic range to include the Kishenehn Formation of northwestern Montana.

• ?†Hiodon shuyangensis Shen, 1989

References

1. Hilton, E. J.; Grande, L. (2008). "Fossil Mooneyes (Teleostei: Hiodontiformes, Hiodontidae) from the Eocene of western North America, with a reassessment of their taxonomy". Geological Society, London, Special Publications. 295 (1): 221–251. Bibcode:2008GSLSP.295..221H. doi:10.1144/sp295.13.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (November 2020) (Learn how and when to remove this message)

• Froese, Rainer; Pauly, Daniel (eds.). "Family Hiodontidae". FishBase. June 2011 version.

v t e Osteoglossomorpha
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Subclass: Neopterygii Infraclass: Teleostei Actinopterygii see Actinopterygii Neopterygii see Neopterygii Teleostei see Teleostei Osteoglossomorpha see below↓ Osteoglossomorpha
Osteoglossomorpha †Chandlerichthys †Coriops †Harenaichthys †Jinanichthys †Paralycoptera? †Tanolepis? †Tongxinichthys †Xixiaichthys †Huashiidae Huashia Kuntulunia †Lycopteridae Jiuquanichthys Kokuraichthys? Kuyangichthys Lycoptera Hiodontiformes Hiodon †Jiaohichthys †Kokuraichthys? †Plesiolycoptera †Yanbiania Osteoglossiformes †Archaeglossus †Furichthys †Joffrichthys †Kokenichthys †Shuleichthys †Tetoriichthys †Thaumaturus †Wakinoichthys †Wilsonichthys †Xixiaichthys? Pantodontidae †Capassopiscis †Cretapantodon †Palaeopantodon †Pankowskipiscis Pantodon †Petersichthys †Prognathoglossum Osteoglossidae sensu lato †Chanopsis †Chauliopareion †Singida †Phareodontinae Brychaetoides Brychaetus Cretophareodus Magnigena Monopteros Musperia Phareodus Phareodusichthys Phareoides Ridewoodichthys Taverneichthys Xosteoglossid Arapaiminae Arapaima Heterotis †Joffrichthys? †Sinoglossus? †Thrissopterus Osteoglossinae †Foreyichthys †Heterosteoglossum †Opsithrissops Osteoglossum Scleropages Notopteroidei Gymnarchus †Laeliichthys †Lopadichthys? †Ostariostoma? †Palaeonotopterus †Sinoglossus? Notopteridae Chitala Notopterus Papyrocranus Xenomystus Mormyridae Petrocephalus Mormyrinae Boulengeromyrus Brevimyrus Brienomyrus Campylomormyrus Cryptomyrus Cyphomyrus Genyomyrus Gnathonemus Heteromormyrus Hippopotamyrus Hyperopisus Isichthys Ivindomyrus Marcusenius Mormyrops Mormyrus Myomyrus Paramormyrops Pollimyrus Stomatorhinus

• Hiodontidae
• Fish of North America