Scientists are still not sure exactly what the function of the blob is. A tetra species (Knodus sp.) with colorful fins that is new to science and was discovered on the RAP expedition to Alto Mayo ...

First, the species has a semi-transparent silvery coloring that immediately stands out from other tetra varieties like ember or neon tetras.This translucent appearance becomes even more apparent ...

It has a bony internal structure which helps pick up sound waves. They are a very peaceful species of fish. The X-ray tetra’s young is called Frys. Here is our x-ray tetra coloring page! Isn’t it so ...