Neon Tetra and Oscar Compatibility Overview
Neon Tetra and Oscar are generally not recommended to be housed together. Oscars will eat neon tetras. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Neon Tetra | Oscar | Verdict |
|---|---|---|---|
| Temperature | 72โ80ยฐF | 74โ81ยฐF | โ 74โ80ยฐF |
| pH Range | 6.0โ7.5 | 6.0โ8.0 | โ 6.0โ7.5 |
| Temperament | peaceful | aggressive | โ Risk |
| Adult Size | 1.5 in | 14 in | โ 9ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Neon Tetra โ Paracheirodon innesi
Iconic schooling fish with vivid electric-blue and red stripes. Hardy in captivity; suitable for most peaceful community setups.
โ Full Neon Tetra 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 Neon Tetra live with Oscar?
Generally not recommended. Neon Tetra and Oscar are generally not recommended to be housed together. Oscars will eat neon tetras. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Neon Tetra and Oscar together?
A minimum of 100 gallons is recommended for keeping Neon Tetra and Oscar together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Neon Tetra and Oscar?
74โ80ยฐF โ inside Neon Tetra's 72โ80ยฐF and Oscar's 74โ81ยฐF.
Is a Neon Tetra aggressive toward a Oscar?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Neon Tetra 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 | 220 gal | Best when keeping larger schools or reducing territorial pressure. |