The cardinal tetra is similar in appearance to the neon tetra. You can tell them apart by one particular detail: the difference in the red stripe, which runs from head to tail. The Cardinal tetras are active schooling fish, and they live peacefully in a community aquarium.
| Scientific Name | Common Name | Size | Temperament |
| Paracheidron axelrodi | Cardinal Tetra | 50mm | Peaceful |
| Water Temperature | Water pH | Tank Size | Diet |
| 23-27°C | 5.5–7.0 | Min 100 liters | Omnivore |
| Lifespan | Care | Difficulty Breeding | Min Population |
| 2-5 Years | Easy - Moderate | Easy - moderate | 1 adult/4L water |
| Robustness | Way of Living | Sociability | Availability |
| Fairly Hardy | Diurnal | Schooling | Freely |