Can Harlequin Rasbora Live With Molly?
Harlequin Rasbora and Molly are compatible. Temperature overlap 73–82°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
| Parameter | Harlequin Rasbora | Molly | Overlap |
|---|---|---|---|
| Temperature | 73–82°F | 72–82°F | 73–82°F ✓ |
| pH Range | 6–7.5 | 7–8.5 | 7–7.5 ✓ |
| Temperament | peaceful | peaceful | Both peaceful ✓ |
| Max Size | 2" | 4.5" | Similar ✓ |
| Min Tank Size | 10 gal | 20 gal | 20 gal minimum together |
| Diet | Omnivore | Omnivore | — |
| Care Level | beginner | beginner | — |
Tank Requirements for Harlequin Rasbora + Molly
To keep Harlequin Rasbora and Molly together, you need at minimum a 20 gallon tank. Harlequin Rasbora should be kept in a school of 6+. Molly should be kept in a school of 4+. 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 →Molly
Poecilia sphenops
Mollies are versatile livebearers that come in many varieties including black, dalmatian, balloon, and sailfin. They prefer hard, alkaline water and can even tolerate brackish conditions. They are active, personable fish that breed easily.
Full care guide →