๐Ÿ  Fish Compatibility Guide

Can Coral Beauty and Harlequin Rasbora Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โŒ Not Compatible โ€” Compatibility Score: 0/100
0/100 โ€” Not Compatible

Coral Beauty and Harlequin Rasbora Compatibility Overview

Coral Beauty and Harlequin Rasbora are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Coral Beauty wants 8.1โ€“8.4 and Harlequin Rasbora wants 5.5โ€“7.5. Review the behavior and water details before deciding whether to attempt the pairing.

Compatibility factors for Coral Beauty and Harlequin Rasbora
FactorCoral BeautyHarlequin RasboraVerdict
Temperature72โ€“82ยฐF72โ€“81ยฐFโœ… 72โ€“81ยฐF
pH Range8.1โ€“8.45.5โ€“7.5โŒ No overlap
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size4.0 in1.75 inโš ๏ธ 2.3ร— difference
Min. Group1+8+See below
Min. Tank Size75 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.
Temperament risk is relatively low when normal group sizes are maintained.

Incompatibility Reasons

One of these is a marine species and the other is not; they cannot share one aquarium.
Their pH ranges do not meet: Coral Beauty wants 8.1โ€“8.4 and Harlequin Rasbora wants 5.5โ€“7.5.

Species Profiles

Coral Beauty โ€” Centropyge bispinosa

Coral Beauty and Harlequin Rasbora compatibility โ€” Coral Beauty

The Coral Beauty Angelfish is a popular choice for reef tanks due to its vibrant colors and gentle demeanor. These fish thrive in well-maintained aquariums with plenty of swimming space and hiding spots. They are generally peaceful with other compatible fish but can be sensitive to aggressive tankmates. A diet rich in variety is essential for their health.

โ†’ Full Coral Beauty care guide

Harlequin Rasbora โ€” Trigonostigma heteromorpha

Coral Beauty and Harlequin Rasbora compatibility โ€” Harlequin Rasbora

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

Frequently Asked Questions

Can Coral Beauty live with Harlequin Rasbora?

Generally not recommended. Coral Beauty and Harlequin Rasbora are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Coral Beauty wants 8.1โ€“8.4 and Harlequin Rasbora wants 5.5โ€“7.5. Review the behavior and water details before deciding whether to attempt the pairing.

What tank size do I need for Coral Beauty and Harlequin Rasbora together?

A minimum of 75 gallons is recommended for keeping Coral Beauty and Harlequin Rasbora together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Coral Beauty and Harlequin Rasbora?

72โ€“81ยฐF โ€” inside Coral Beauty's 72โ€“82ยฐF and Harlequin Rasbora's 72โ€“81ยฐF.

Is a Coral Beauty aggressive toward a Harlequin Rasbora?

Coral Beauty is peaceful and Harlequin Rasbora is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Coral Beauty and Harlequin Rasbora

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable75 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community125 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup150 galBest when keeping larger schools or reducing territorial pressure.