Cardinal Tetra

Many veteran fishkeepers often prefer the more colorful, higher-priced cousin of the neon tetra - the cardinal tetra. Its common name refers to the very prominent, cardinal red stripe running horizontally down its body, which is paired with an iridescent blue stripe that is visible even when the fish tank lights are off. Personality-wise, they can be a little shy if you suddenly walk in front of the tank, but they are quick to come out of hiding, especially if you have a large school of them. Imagine watching an entire school of these colorful jewels swimming back and forth in the midst of a forest of lush, green plants.