Alepocephaliformes
| Alepocephaliformes | |
|---|---|
| California slickhead, Alepocephalus tenebrosus | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Actinopterygii | 
| Cohort: | Otocephala | 
| Superorder: | Alepocephali | 
| Order: | Alepocephaliformes Marshall, 1962 | 
| Type species | |
| Alepocephalus rostratus | |
| Families | |
| See text | |
Alepocephaliformes is an order of marine deep-sea teleost fishes. It was previously classified as the suborder Alepocephaloidei of the order Argentiniformes.
As an adaptation to a life in the deep-sea, there is no swim bladder, and the ossification of the skeleton is reduced. The largest known member is Narcetes shonanmaruae, the largest deep-sea-endemic bony fish.