Longnose Tapirfish
Polyacanthonotus challengeri
- Least concern
- Card rarity: Common
- Fish

The longnose tapirfish is a species of deep-sea spiny eel that lives in bathypelagic environments, and is a host of an endoparasite, Brachyenteron rissoanum.
Classification
- Class
- Actinopterygii
- Order
- Notacanthiformes
- Family
- Notacanthidae
- Genus
- Polyacanthonotus