Cardinal Tetra and Moonlight Gourami Compatibility Overview
Cardinal Tetra and Moonlight Gourami can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Cardinal Tetra | Moonlight Gourami | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 77โ86ยฐF | โ 77โ82ยฐF |
| pH Range | 4.5โ7.0 | 6.0โ7.5 | โ 6.0โ7.0 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.5 in | 5.9 in | โ ๏ธ 3.9ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Cardinal Tetra โ Paracheirodon axelrodi
Brilliant red-and-blue schooling fish from the Rio Negro. Prefers soft, acidic, warm water โ a natural companion for discus.
โ Full Cardinal Tetra care guide
Moonlight Gourami โ Trichopodus microlepis
The Moonlight Gourami is a beautiful freshwater fish known for its silvery blue color and red eyes. It is a peaceful community fish suitable for beginners and can thrive in a well-maintained aquarium. These fish are sensitive to water quality and require a spacious tank with plenty of swimming space.
Frequently Asked Questions
Can Cardinal Tetra live with Moonlight Gourami?
With significant caution and a larger tank. Cardinal Tetra and Moonlight Gourami can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Cardinal Tetra and Moonlight Gourami together?
A minimum of 75 gallons is recommended for keeping Cardinal Tetra and Moonlight Gourami together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cardinal Tetra and Moonlight Gourami?
77โ82ยฐF โ inside Cardinal Tetra's 73โ82ยฐF and Moonlight Gourami's 77โ86ยฐF.
Is a Cardinal Tetra aggressive toward a Moonlight Gourami?
Cardinal Tetra is peaceful and Moonlight Gourami is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Cardinal Tetra and Moonlight Gourami
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |