What primary characteristic gives the X-Ray Tetra its common name?
Answer
Near-translucence of the body
The fish earned the name X-Ray Tetra because its body is so clear that its internal skeletal structure and organs can be observed through the skin.

Related Questions
What is the scientific name for the X-Ray Tetra?What primary characteristic gives the X-Ray Tetra its common name?Which major South American river basin is a primary native habitat for the X-Ray Tetra?Besides the major river basins, which country is listed as part of the X-Ray Tetra's native distribution?Approximately how long do X-Ray Tetras generally grow?While largely transparent, what characteristic coloration do the fins of the X-Ray Tetra often display?Why is the high volume available in the pet trade significant for wild populations?What challenge do casual observers face when trying to determine the sex of X-Ray Tetras?What is the recommended minimum group size for keeping X-Ray Tetras?According to the provided sources, what is the conservation status of *Pristella maxillaris* regarding endangerment?What anatomical features can be observed through the near-translucent skin of the fish?