American Sailfin Eel
Letharchus velifer
- Least concern
- Card rarity: Common
- Fish

The American sailfin eel is an eel in the family Ophichthidae. It was described by George Brown Goode and Tarleton Hoffman Bean in 1882. It is a subtropical, marine eel which is known from the western Atlantic Ocean, including the United States and the northeastern Gulf of Mexico. It frequently inhabits scallop grounds. Males can reach a maximum total length of 51 centimeters.
Classification
- Class
- Actinopterygii
- Order
- Anguilliformes
- Family
- Ophichthidae
- Genus
- Letharchus