The Mexican tetra fish that lives in the rivers of Northern Mexico can heal its heart, while its cave-dwelling relative cannot A fish that can repair its heart may hold clues for future treatments ...

Neon Tetra Neon Tetras, a variety of Tetras, are small, colorful fish, perfect for those looking for a cheerful and vibrant ...

The Mexican tetra, also known as the "blind cave fish," has a unique pinkish-white appearance and lacks functional eyes. It ...

The Mexican tetra (Astyanax mexicanus) is a freshwater fish that naturally exists in a river-dwelling surface form and several independently evolved cave-dwelling forms. Unlike the surface form ...