Harlequin Rasbora and Yoyo Loach Compatibility Overview
Harlequin Rasbora and Yoyo Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Harlequin Rasbora is peaceful and Yoyo Loach is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Harlequin Rasbora | Yoyo Loach | Verdict |
|---|---|---|---|
| Temperature | 72โ81ยฐF | 66โ82ยฐF | โ 72โ81ยฐF |
| pH Range | 5.5โ7.5 | 6.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | semi | โ ๏ธ Monitor |
| Adult Size | 1.75 in | 6.3 in | โ ๏ธ 3.6ร difference |
| Min. Group | 8+ | 5+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
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.
โ Full Harlequin Rasbora care guide
Yoyo Loach โ Botia almorhae
The Yoyo Loach is a popular freshwater species known for its striking black and white coloration. They are peaceful and make great community fish, though they may be shy and require a well-established tank with ample hiding spots. These loaches are moderately active and do well in a tank with plenty of room to swim.
Frequently Asked Questions
Can Harlequin Rasbora live with Yoyo Loach?
Yes, in a well-planned setup. Harlequin Rasbora and Yoyo Loach can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Harlequin Rasbora is peaceful and Yoyo Loach is semi, so give them room and cover rather than assuming they will ignore each other. A minimum 75-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Harlequin Rasbora and Yoyo Loach together?
A minimum of 75 gallons is recommended for keeping Harlequin Rasbora and Yoyo Loach together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Harlequin Rasbora and Yoyo Loach?
72โ81ยฐF โ inside Harlequin Rasbora's 72โ81ยฐF and Yoyo Loach's 66โ82ยฐF.
Is a Harlequin Rasbora aggressive toward a Yoyo Loach?
Harlequin Rasbora is peaceful and Yoyo Loach is semi. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Harlequin Rasbora and Yoyo Loach
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. |