Oscar and Peppered Cory Compatibility Overview
Oscar and Peppered Cory are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Oscar is aggressive and Peppered Cory is peaceful. 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 | Peppered Cory | Verdict |
|---|---|---|---|
| Temperature | 74โ81ยฐF | 72โ79ยฐF | โ 74โ79ยฐF |
| pH Range | 6.0โ8.0 | 6.0โ7.0 | โ 6.0โ7.0 |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 14 in | 2.8 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.
Peppered Cory โ Corydoras paleatus
The Peppered Cory is a popular freshwater fish known for its peaceful nature and unique appearance. They are suitable for beginners and can thrive in a community tank. These fish are small, reaching up to 7 cm in size, and are easily recognizable by their dark brown bodies with white spots.
Frequently Asked Questions
Can Oscar live with Peppered Cory?
Generally not recommended. Oscar and Peppered Cory are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Oscar is aggressive and Peppered Cory is peaceful. 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 Peppered Cory together?
A minimum of 100 gallons is recommended for keeping Oscar and Peppered Cory together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Oscar and Peppered Cory?
74โ79ยฐF โ inside Oscar's 74โ81ยฐF and Peppered Cory's 72โ79ยฐF.
Is a Oscar aggressive toward a Peppered Cory?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Oscar and Peppered Cory
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. |