- Source: Sewellia elongata
- Sewellia elongata
- Sewellia
- List of near threatened fishes
- List of least concern fishes
- List of endangered fishes
- IUCN Red List endangered species (Animalia)
- List of vulnerable fishes
- List of freshwater aquarium fish species
- IUCN Red List critically endangered species (Animalia)
- IUCN Red List vulnerable species (Animalia)
Sewellia elongata is a species of fish in the genus Sewellia. The fish is found in the Se Kong River and is 7.3 cm (2.9 in) long (SL).