Compatibility
Dwarf Rasbora × Guppy Compatibility
Compatibility calculated based on predation risk, behaviour profile, and water-parameter overlap.

Dwarf Rasbora and Guppy are not recommended together in most community setups, but size difference should be monitored and water-parameter overlap should be checked carefully.
TemperatureA
pHC
HardnessC
FlowA
PredationB
BehaviourA
Not recommendedC
Envrionmental Factors
Temperature overlap
Dwarf Rasbora: 24.0–26.0 °C
Guppy: 20.0–28.0 °C
Shared window: 24.0–26.0°C.
pH overlap
Dwarf Rasbora: 5.0–6.0
Guppy: 7.0–8.0
No shared operating range is present between the recorded values.
Hardness overlap
Dwarf Rasbora: Very soft → Soft
Guppy: Medium → Very hard
No shared hardness band is present.
Flow match
Dwarf Rasbora: Low
Guppy: Medium
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 | Dwarf Rasbora | Guppy |
|---|---|---|
| Adult size | 2.5 cm | 5.0 cm |
| Temperature | 24.0–26.0 °C | 20.0–28.0 °C |
| pH | 5.0–6.0 | 7.0–8.0 |
| Hardness | Very soft → Soft | Medium → Very hard |
| Flow | Low | Medium |
| Locations | Malaysia, Indonesia | South America, Barbados |
Geographic overlap (supporting signal)
No recorded overlap in our dataset.
Best tank mates for Dwarf Rasbora
Reference links to curated compatibility pair pages for this species.

Cardinal Tetra
Paracheirodon axelrodi

Cherry barb
Rohanella titteya

Harlequin rasbora
Trigonostigma heteromorpha

Neon tetra
Paracheirodon innesi
Best tank mates for Guppy
Reference links to curated compatibility pair pages for this species.
Common Molly
Poecilia sphenops

Endler's livebearer
Poecilia wingei

Platy
Xiphophorus maculatus

Swordtail
Xiphophorus hellerii