Can Harlequin Rasbora Live With Congo Tetra?
Harlequin Rasbora and Congo Tetra are compatible. Temperature overlap 73–82°F. Both peaceful.
Conditions: Minimum 30 gallon tank.
Parameter Comparison
| Parameter | Harlequin Rasbora | Congo Tetra | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 73–82°F | 73–82°F ✓ |
| pH Range | 6–7.5 | 6–7.5 | 6–7.5 ✓ |
| 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 | beginner | intermediate | — |
Tank Requirements for Harlequin Rasbora + Congo Tetra
To keep Harlequin Rasbora and Congo Tetra together, you need at minimum a 30 gallon tank. Harlequin Rasbora 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
Harlequin Rasbora
Trigonostigma heteromorpha
Harlequin rasboras are elegant, copper-colored schooling fish with a distinctive black triangular patch on their body. They are one of the most peaceful and hardy community fish available, making them ideal for beginners. In schools of 8+, they display beautiful coordinated swimming behavior.
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 →