Can Cardinal Tetra Live With German Blue Ram?
Cardinal Tetra and German Blue Ram are compatible. Temperature overlap 78–81°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Cardinal Tetra | German Blue Ram | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 78–86°F | 78–81°F ✓ |
| pH Range | 4.5–7 | 5.5–7 | 5.5–7 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Cardinal Tetra + German Blue Ram
To keep Cardinal Tetra and German Blue Ram together, you need at minimum a 20 gallon tank. Cardinal 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 →German Blue Ram
Mikrogeophagus ramirezi
German blue rams are one of the most beautiful dwarf cichlids, with iridescent blue and gold coloration, a distinctive black spot, and red-highlighted fins. Despite being cichlids, they are remarkably peaceful and make excellent centerpiece fish for planted community tanks. They do require warm, soft water and are more sensitive than typical community fish.
Full care guide →