Can Cardinal Tetra Live With Congo Tetra?
Cardinal Tetra and Congo Tetra are compatible. Temperature overlap 73–81°F. Both peaceful.
Conditions: Minimum 30 gallon tank.
Parameter Comparison
| Parameter | Cardinal Tetra | Congo Tetra | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 73–82°F | 73–81°F ✓ |
| pH Range | 4.5–7 | 6–7.5 | 6–7 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3.5" | Similar ✓ |
| Min Tank Size | 10 gal | 30 gal | 30 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Cardinal Tetra + Congo Tetra
To keep Cardinal Tetra and Congo Tetra together, you need at minimum a 30 gallon tank. Cardinal Tetra should be kept in a school of 6+. Congo Tetra should be kept in a school of 6+. Provide adequate filtration, stable temperature with a heater, and hiding spots to reduce stress.
Species Profiles
Cardinal Tetra
Paracheirodon axelrodi
Cardinal tetras look similar to neon tetras but have a red stripe that extends the entire length of their body (vs only the back half in neons). They prefer softer, more acidic water and are slightly more delicate, but their deeper coloration makes them highly sought after.
Full care guide →Congo Tetra
Phenacogrammus interruptus
Congo tetras are the showstoppers of the tetra family. Males develop spectacular flowing fins with an iridescent rainbow sheen that shifts from blue to gold to green under aquarium lighting. They are larger than most tetras (up to 3.5 inches) and need a spacious, well-planted tank to display their full beauty. Peaceful but shy — they thrive with calm tank mates.
Full care guide →