Pristella maxillaris

Pristella maxillaris
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Acestrorhamphidae
Genus: Pristella
Species:
P. maxillaris
Binomial name
Pristella maxillaris
(Ulrey, 1894)
Synonyms
  • Aphyocarax maxillaris Ulrey, 1894
  • Holopristis riddlei Meek, 1907
  • Pristella riddlei (Meek, 1907)

Pristella maxillaris, the X-ray tetra also known as 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.