Can Harlequin Rasbora Live With Serpae Tetra?
Harlequin Rasbora and Serpae Tetra may coexist with careful monitoring, adequate space, and hiding spots.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Harlequin Rasbora | Serpae Tetra | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 72–82°F | 73–82°F ✓ |
| pH Range | 6–7.5 | 5.5–7.5 | 6–7.5 ✓ |
| Temperament | peaceful | semi-aggressive | Monitor ⚠ |
| Max Size | 2" | 1.75" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Tank Requirements for Harlequin Rasbora + Serpae Tetra
To keep Harlequin Rasbora and Serpae Tetra together, you need at minimum a 20 gallon tank. Harlequin Rasbora should be kept in a school of 6+. Serpae Tetra should be kept in a school of 8+. 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 →Serpae Tetra
Hyphessobrycon eques
Serpae tetras are vibrant blood-red schooling fish with a distinctive black comma-shaped marking behind the gill plate. While beautiful, they have a reputation as fin nippers — especially in small groups. Keeping them in schools of 8+ in a spacious tank significantly reduces this behavior. They add bold color to community tanks when kept properly.
Full care guide →