Compatibility
Ember Tetra × Harlequin rasbora Compatibility
Compatibility calculated based on predation risk, behaviour profile, and water-parameter overlap.
Ember Tetra and Harlequin 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
Ember Tetra: 24.0–28.0 °C
Harlequin rasbora: 22.0–26.0 °C
Shared window: 24.0–26.0°C.
pH overlap
Ember Tetra: 6.0–7.0
Harlequin rasbora: 5.0–7.2
Shared window: 6.0–7.0.
Hardness overlap
Ember Tetra: Very soft → Soft
Harlequin rasbora: Very soft → Medium
Shared hardness bands: 2 (overlap ratio 100%).
Flow match
Ember Tetra: Medium
Harlequin rasbora: Low
Flow preferences do not conflict directly (no low-vs-high clash).
Behavioural Factors
Predation risk (size ratio)
Adult size ratio: 2.50x
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 | Ember Tetra | Harlequin rasbora |
|---|---|---|
| Adult size | 2.0 cm | 5.0 cm |
| Temperature | 24.0–28.0 °C | 22.0–26.0 °C |
| pH | 6.0–7.0 | 5.0–7.2 |
| Hardness | Very soft → Soft | Very soft → Medium |
| Flow | Medium | Low |
| Locations | Araguaia River Basin, Brazil | Indonesia |
Geographic overlap (supporting signal)
No recorded overlap in our dataset.
Best tank mates for Ember Tetra
Reference links to curated compatibility pair pages for this species.
Cardinal Tetra
Paracheirodon axelrodi
Chili Rasbora
Boraras brigittae
Honey Gourami
Trichogaster chuna
Neon tetra
Paracheirodon innesi
Best tank mates for Harlequin rasbora
Reference links to curated compatibility pair pages for this species.
Cardinal Tetra
Paracheirodon axelrodi
Chili Rasbora
Boraras brigittae
Corydoras
Corydoras spp.
Dwarf Rasbora
Boraras maculatus