Clown Pleco and Harlequin Rasbora Compatibility Overview
Clown Pleco and Harlequin Rasbora 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 | Clown Pleco | Harlequin Rasbora | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 72โ81ยฐF | โ 73โ81ยฐF |
| pH Range | 6.5โ7.8 | 5.5โ7.5 | โ 6.5โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 3.5 in | 1.75 in | โ ๏ธ 2.0ร difference |
| Min. Group | 1+ | 8+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
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.
โ Full Clown Pleco care guide
Harlequin Rasbora โ Trigonostigma heteromorpha
Active mid-level schooling fish with a distinctive black triangular patch. One of the best all-around community tank fish.
Frequently Asked Questions
Can Clown Pleco live with Harlequin Rasbora?
Yes, in a well-planned setup. Clown Pleco and Harlequin Rasbora 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 Clown Pleco and Harlequin Rasbora together?
A minimum of 55 gallons is recommended for keeping Clown Pleco and Harlequin Rasbora together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Pleco and Harlequin Rasbora?
73โ81ยฐF โ inside Clown Pleco's 73โ82ยฐF and Harlequin Rasbora's 72โ81ยฐF.
Is a Clown Pleco aggressive toward a Harlequin Rasbora?
Clown Pleco is peaceful and Harlequin Rasbora is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Clown Pleco and Harlequin Rasbora
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. |