Pristella maxillaris is a species of characin in the genus Pristella, and is commonly known as the X-ray fish or X-ray tetra because of its translucent body

The Pristella Tetra can be a really good fish for the freshwater fish beginner. These tetras are fairly hardy and should do well in a somewhat broader range ...r X-Ray Fish is a deep-bodied tetra species. This fish will generally reach about 1 3/4 inches (4.5 cm) in length and has a lifespan