Oscar and Tiger Barb Compatibility Overview
Oscar and Tiger Barb are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Oscar is aggressive and Tiger Barb is semi. 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 | Oscar | Tiger Barb | Verdict |
|---|---|---|---|
| Temperature | 74โ81ยฐF | 68โ79ยฐF | โ 74โ79ยฐF |
| pH Range | 6.0โ8.0 | 6.0โ8.0 | โ 6.0โ8.0 |
| Temperament | aggressive | semi | โ Risk |
| Adult Size | 14 in | 2.75 in | โ 5ร difference |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
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.
Tiger Barb โ Puntigrus tetrazona
Striking striped barbs that are notorious fin-nippers. Must be kept in groups of 6+ to redirect aggression within the school. Incompatible with long-finned fish.
Frequently Asked Questions
Can Oscar live with Tiger Barb?
Generally not recommended. Oscar and Tiger Barb are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Oscar is aggressive and Tiger Barb is semi. 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 Oscar and Tiger Barb together?
A minimum of 100 gallons is recommended for keeping Oscar and Tiger Barb together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Oscar and Tiger Barb?
74โ79ยฐF โ inside Oscar's 74โ81ยฐF and Tiger Barb's 68โ79ยฐF.
Is a Oscar aggressive toward a Tiger Barb?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Oscar and Tiger Barb
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 | 220 gal | Best when keeping larger schools or reducing territorial pressure. |