Dwarf Gourami and Oscar Compatibility Overview
Dwarf Gourami and Oscar are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Dwarf Gourami is semi and Oscar is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Dwarf Gourami | Oscar | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 74โ81ยฐF | โ 74โ81ยฐF |
| pH Range | 6.0โ7.5 | 6.0โ8.0 | โ 6.0โ7.5 |
| Temperament | semi | aggressive | โ Risk |
| Adult Size | 3.5 in | 14 in | โ 4ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Dwarf Gourami โ Trichogaster lalius
Colourful labyrinth fish that is generally peaceful but can be territorial toward similar species. Susceptible to Dwarf Gourami Iridovirus.
โ Full Dwarf Gourami care guide
Oscar โ Astronotus ocellatus
Intelligent but aggressive cichlids that will eat any fish small enough to fit in their mouth. Require large tanks (75+ gallons) and robust tank mates.
Frequently Asked Questions
Can Dwarf Gourami live with Oscar?
Generally not recommended. Dwarf Gourami and Oscar are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Dwarf Gourami is semi and Oscar is aggressive. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Dwarf Gourami and Oscar together?
A minimum of 100 gallons is recommended for keeping Dwarf Gourami and Oscar together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Dwarf Gourami and Oscar?
74โ81ยฐF โ inside Dwarf Gourami's 72โ82ยฐF and Oscar's 74โ81ยฐF.
Is a Dwarf Gourami aggressive toward a Oscar?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Dwarf Gourami and Oscar
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 180 gal | Best when keeping larger schools or reducing territorial pressure. |