Cardinal Tetra and Clown Pleco Compatibility Overview
Cardinal Tetra and Clown Pleco can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Cardinal Tetra | Clown Pleco | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 73โ82ยฐF | โ 73โ82ยฐF |
| pH Range | 4.5โ7.0 | 6.5โ7.8 | โ ๏ธ 6.5โ7.0 (narrow) |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1.5 in | 3.5 in | โ ๏ธ 2.3ร difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 55 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
Clown Pleco โ Panaqolus maccus
The Clown Pleco is a popular freshwater fish known for its dark brown body with light spots and long, flattened body shape. They are peaceful and make great community fish for beginners. These plecos are moderate in activity level and prefer a tank with plenty of hiding spots.
Frequently Asked Questions
Can Cardinal Tetra live with Clown Pleco?
Yes, in a well-planned setup. Cardinal Tetra and Clown Pleco can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Cardinal Tetra and Clown Pleco together?
A minimum of 55 gallons is recommended for keeping Cardinal Tetra and Clown Pleco together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cardinal Tetra and Clown Pleco?
73โ82ยฐF โ inside Cardinal Tetra's 73โ82ยฐF and Clown Pleco's 73โ82ยฐF.
Is a Cardinal Tetra aggressive toward a Clown Pleco?
Cardinal Tetra is peaceful and Clown Pleco is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Cardinal Tetra and Clown Pleco
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |