Can Cardinal Tetra Live With Pygmy Corydoras?
Cardinal Tetra and Pygmy Corydoras are compatible. Temperature overlap 73–79°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Cardinal Tetra | Pygmy Corydoras | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 72–79°F | 73–79°F ✓ |
| pH Range | 4.5–7 | 6–7.5 | 6–7 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 1" | Similar ✓ |
| Min Tank Size | 10 gal | 10 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | intermediate | beginner | — |
Tank Requirements for Cardinal Tetra + Pygmy Corydoras
To keep Cardinal Tetra and Pygmy Corydoras together, you need at minimum a 20 gallon tank. Cardinal Tetra should be kept in a school of 6+. Pygmy Corydoras should be kept in a school of 10+. 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 →Pygmy Corydoras
Corydoras pygmaeus
Pygmy corydoras are tiny, adorable catfish that max out at just 1 inch. Unlike other corys that stay on the bottom, pygmy corys are unique in that they frequently swim in the mid-water column, hovering in groups like tiny helicopters. They are perfect for nano tanks and shrimp tanks, and their micro-schooling behavior is endlessly entertaining.
Full care guide →