X-ray Tetra
Pristella maxillaris
- Least concern
- Card rarity: Common
- Fish

Pristella maxillaris, also known as the X-ray tetra or X-ray fish, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This translucent fish is found in South America and is a popular aquarium fish.
Classification
- Class
- Actinopterygii
- Order
- Characiformes
- Family
- Acestrorhamphidae
- Genus
- Pristella