Compatibility Overview
Bristlenose Pleco and Pygmy Corydoras can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Bristlenose Pleco | Pygmy Corydoras | Verdict |
|---|---|---|---|
| Temperature | 60–80°F | 72–79°F | ✅ 72–79°F |
| pH Range | 6.5–7.5 | 6.0–7.5 | ✅ 6.5–7.5 |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 5 in | 1 in | ❌ 5× difference |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 75 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
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
Pygmy Corydoras — Corydoras pygmaeus
Tiny armoured catfish that school in open water as well as on the substrate. Peaceful with all non-aggressive species.
Frequently Asked Questions
Can Bristlenose Pleco live with Pygmy Corydoras?
With significant caution and a larger tank. Bristlenose Pleco and Pygmy Corydoras can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Bristlenose Pleco and Pygmy Corydoras together?
A minimum of 75 gallons is recommended for keeping Bristlenose Pleco and Pygmy Corydoras together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Bristlenose Pleco and Pygmy Corydoras?
72–79°F
Is a Bristlenose Pleco aggressive toward a Pygmy Corydoras?
Bristlenose Pleco is peaceful and Pygmy Corydoras is peaceful. Large size difference: Bristlenose Pleco (5 in) may predate on Pygmy Corydoras (1 in).