Notacanthiformes

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Notocanthiformes
Snubnosed Spiny Eel, Notacanthus chemnitzii. From plate 50 of Oceanic Ichthyology by G. Brown Goode and Tarleton H. Bean, published 1896.
Snubnosed Spiny Eel, Notacanthus chemnitzii. From plate 50 of Oceanic Ichthyology by G. Brown Goode and Tarleton H. Bean, published 1896.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Notacanthiformes
Families

Halosauridae
Notacanthidae

Notacanthiformes is an order of deep-sea ray-finned fishes, consisting of the families Halosauridae and Notacanthidae (spiny eels)

The order is of relatively recent vintage; Fishes of the World lists it as a suborder Notacanthoidei of Albuliformes. The notacanthiforms are much more eel-like than the albuliforms; for instance, the caudal fin has disappeared.

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