Bristlenose Pleco and Discus Compatibility Overview
Short answer: No. Bristlenose Pleco needs 60-80°F and Discus needs 82-88°F. Keep them in separate tanks, or pick one of the safer tank mates listed below.
Bristlenose Pleco and Discus are generally not recommended to be housed together. There is no shared temperature: Bristlenose Pleco needs 60–80°F and Discus needs 82–88°F. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Bristlenose Pleco | Discus | Verdict |
|---|---|---|---|
| Temperature | 60–80°F | 82–88°F | ❌ No overlap |
| pH Range | 6.5–7.5 | 5.0–7.0 | ⚠️ 6.5–7.0 (narrow) |
| Temperament | peaceful | semi | ⚠️ Monitor |
| Adult Size | 5 in | 8 in | ✅ Similar |
| Min. Group | 1+ | 5+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Bristlenose Pleco — Ancistrus sp.
Hardy armoured catfish that grazes on algae. Peaceful with virtually all species; tolerates a wide temperature range.
→ Full Bristlenose Pleco care guide
Discus — Symphysodon spp.
The 'king of the aquarium' — beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Frequently Asked Questions
Can Bristlenose Pleco live with Discus?
Generally not recommended. Bristlenose Pleco and Discus are generally not recommended to be housed together. There is no shared temperature: Bristlenose Pleco needs 60–80°F and Discus needs 82–88°F. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Bristlenose Pleco and Discus together?
A minimum of 100 gallons is recommended for keeping Bristlenose Pleco and Discus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Bristlenose Pleco and Discus?
There is no safe shared range: Bristlenose Pleco needs 60–80°F and Discus needs 82–88°F.
Is a Bristlenose Pleco aggressive toward a Discus?
Bristlenose Pleco is peaceful and Discus is semi. No major aggression issues are expected between these species.
Safer Tank Mates for Bristlenose Pleco and Discus
The highest-scoring compatible partners for each species in our compatibility data.
For Bristlenose Pleco
- Rosy Barb — 98/100
- Denison Barb — 97/100
- Hillstream Loach — 96/100
- Zebra Loach — 96/100
- Keyhole Cichlid — 95/100
For Discus
- Moonlight Gourami — 81/100
- Clown Loach — 80/100
- Three Spot Gourami — 79/100
- African Butterfly Fish — 77/100
- Cardinal Tetra — 76/100
Related Compatibility Guides
Tank Size for Bristlenose Pleco 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. |