The bright, neon, lateral stripe of cardinal tetras makes it difficult for predators to single out and attack an individual. Their schooling behavior also helps to protect individuals from predators. Although little is known on the specific predators of cardinal tetras, they likely fall prey to larger fish and other small to medium aquatic predators as adults, fry, and eggs.
When kept in an aquarium with larger fish, such as angelfish, cardinal tetras may become their prey.
- larger fish (Actinopterygii)