Congo Tetra and Discus Compatibility Overview
Congo Tetra and Discus can potentially coexist, but the combination requires careful attention. Their ranges meet only at 82โ82ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
| Factor | Congo Tetra | Discus | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 82โ88ยฐF | โ ๏ธ 82โ82ยฐF (narrow) |
| pH Range | 6.0โ7.5 | 5.0โ7.0 | โ 6.0โ7.0 |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 3.1 in | 8 in | โ ๏ธ 2.6ร difference |
| Min. Group | 6+ | 5+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Congo Tetra โ Phenacogrammus interruptus
The Congo Tetra is a vibrant and active fish that thrives in a well-maintained freshwater aquarium. With its striking coloration and peaceful nature, it's a great addition to any community tank. This species is best kept in groups and requires a spacious tank with plenty of swimming space.
โ Full Congo Tetra care guide
Discus โ Symphysodon spp.
The 'king of the aquarium' โ beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Frequently Asked Questions
Can Congo Tetra live with Discus?
With significant caution and a larger tank. Congo Tetra and Discus can potentially coexist, but the combination requires careful attention. Their ranges meet only at 82โ82ยฐF, which leaves no margin for a heater drifting or a warm room. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Congo Tetra and Discus together?
A minimum of 100 gallons is recommended for keeping Congo Tetra and Discus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Congo Tetra and Discus?
82โ82ยฐF (narrow) โ inside Congo Tetra's 73โ82ยฐF and Discus's 82โ88ยฐF.
Is a Congo Tetra aggressive toward a Discus?
Congo Tetra is peaceful and Discus is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Congo Tetra and Discus
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. |