Trachichthyiformes
| Trachichthyiformes Temporal range:
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Superorder: | Acanthopterygii |
| Order: | Trachichthyiformes Moore, 1993[1] |
| Families | |
The Trachichthyiformes /træˈkɪkθi.ɪfɔːrmiːz/ are an order of ray-finned fishes in the superorder Acanthopterygii.
Fossils of this group date back to the Cenomanian.[2][3]
Member genera include the flashlight fishes, fangtooth fishes, spinyfins, pineconefishes, redfishes, roughies, and slimeheads. A number of member species are caught commercially, most notably the orange roughy.[4] Some species have bioluminescent bacteria contained in pockets of skin or in light organs near the eyes, including the anomalopids and monocentrids.[5]
Etymology
[edit | edit source]The name comes from Ancient Greek τραχύς (trakhús), meaning "rough", ἰχθύς (ikhthús), meaning "fish", and Latin formes, meaning "form".
Phylogeny
[edit | edit source]A recent phylogeny based on the work of Betancur-Rodriguez et al. 2017 shows Trachichthyiformes as a sister group of Beryciformes in the clade Berycimorpha.[6]
| Acanthopterygii |
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References
[edit | edit source]- ^ The phylogeny and evolution of the Trachichthyiformes (Teleostei: Percomorpha), with comments on the intrarelationships of the Acanthomorpha. JA Moore, 1993
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- Hgulichthys, nouveau genre de Lissoberycinae (Trachichthyiformes, Trachichthyoidea) du Cénomanien inférieur marin de Hgula (Liban). Implications ... O Otero, Y Dutour, M Gayet, Geobios, 1995
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