Can Cardinal Tetra Live With Hillstream Loach?
Cardinal Tetra and Hillstream Loach are compatible. Temperature overlap 73–75°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Cardinal Tetra | Hillstream Loach | Overlap |
|---|---|---|---|
| Temperature | 73–81°F | 65–75°F | 73–75°F ✓ |
| pH Range | 4.5–7 | 6.5–7.5 | 6.5–7 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 3" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Herbivore | — |
| Care Level | intermediate | intermediate | — |
Tank Requirements for Cardinal Tetra + Hillstream Loach
To keep Cardinal Tetra and Hillstream Loach together, you need at minimum a 20 gallon tank. Cardinal Tetra should be kept in a school of 6+. Hillstream Loach should be kept in a school of 3+. 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 →Hillstream Loach
Sewellia lineolata
Hillstream loaches are fascinating flat-bodied fish that resemble tiny stingrays. They are specialized for life in fast-flowing, oxygen-rich streams and use their modified pelvic and pectoral fins to grip smooth rocks in strong current. Their unique appearance, algae-eating habits, and cool-water preference make them popular with experienced fishkeepers looking for something different.
Full care guide →