Compatibility
Harlequin rasbora × Chili Rasbora Compatibility
Compatibility calculated based on predation risk, behaviour profile, and water-parameter overlap.
Harlequin rasbora and Chili Rasbora can usually live together in a well-planted community tank, but size difference should be monitored.
TemperatureB
pHA
HardnessA
FlowA
PredationB
BehaviourA
Generally compatibleA
Envrionmental Factors
Temperature overlap
Harlequin rasbora: 22.0–26.0 °C
Chili Rasbora: 24.0–28.0 °C
Shared window: 24.0–26.0°C.
pH overlap
Harlequin rasbora: 5.0–7.2
Chili Rasbora: 4.0–7.0
Shared window: 5.0–7.0.
Hardness overlap
Harlequin rasbora: Very soft → Medium
Chili Rasbora: Very soft → Soft
Shared hardness bands: 2 (overlap ratio 100%).
Flow match
Harlequin rasbora: Low
Chili Rasbora: Low
Flow preferences do not conflict directly (no low-vs-high clash).
Behavioural Factors
Predation risk (size ratio)
Adult size ratio: 2.00x
Size gap is between 2.0x and 3.0x, so monitor for dominance and mouth-fit risk.
Behaviour risk
- - Both species are generally peaceful; behaviour conflict risk is low.
Parameter snapshot
| Parameter | Harlequin rasbora | Chili Rasbora |
|---|---|---|
| Adult size | 5.0 cm | 2.5 cm |
| Temperature | 22.0–26.0 °C | 24.0–28.0 °C |
| pH | 5.0–7.2 | 4.0–7.0 |
| Hardness | Very soft → Medium | Very soft → Soft |
| Flow | Low | Low |
| Locations | Indonesia | Southern Borneo, Indonesia |
Geographic overlap (supporting signal)
No recorded overlap in our dataset.
Best tank mates for Harlequin rasbora
Reference links to curated compatibility pair pages for this species.
Cardinal Tetra
Paracheirodon axelrodi
Corydoras
Corydoras spp.
Dwarf Rasbora
Boraras maculatus
Ember Tetra
Hyphessobrycon amandae
Best tank mates for Chili Rasbora
Reference links to curated compatibility pair pages for this species.
Cardinal Tetra
Paracheirodon axelrodi
Cherry barb
Rohanella titteya
Ember Tetra
Hyphessobrycon amandae
Neon tetra
Paracheirodon innesi