Longjaw Flounder
Chascanopsetta prorigera
- Least concern
- Card rarity: Common
- Fish

Chascanopsetta prorigera is a species of pleuronectiformes in the of family Bothidae. It was discovered by American ichthyologist Charles Henry Gilbert in 1905 off the coast of Maui, Hawaii. They live in deep-sea, bathydemersal habitats, typically found at depths ranging from 267 to 400 meters. They are 18–25 mm long on average but can get to be longer than 30 mm.
Classification
- Class
- Actinopterygii
- Order
- Carangiformes
- Family
- Bothidae
- Genus
- Chascanopsetta