| Letholycus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Division: | Teleostei |
| Order: | Perciformes |
| Suborder: | Zoarcoidei |
| Family: | Zoarcidae |
| Subfamily: | Lycodinae |
| Genus: | Letholycus M. E. Anderson, 1988 |
| Type species | |
| Melanostigma microphthalmus Norman, 1937 | |
Letholycus is a genus of marine ray-finned fishes belonging to the family Zoarcidae, the eelpouts. This is a small genus with only two species found in the southwestern Atlantic Ocean.