Harlequin rasbora compatibility
Every pairing AquariumHQ has assessed for Harlequin rasbora, derived from stored behavioural and environmental traits. Each verdict links to the reasoning behind it — including where the evidence runs out.
The species record is on the Harlequin rasbora page. Any pairing not listed here can be assessed on demand with the compatibility checker.
What decides this species' pairings
Counted across every assessment above — the dimensions that actually raise concerns for this animal, rather than the ones a care sheet would list.
| Dimension | Pairings raising it | Share |
|---|---|---|
| temperature | 29 | 45% |
| zone competition | 21 | 32% |
| predation | 16 | 25% |
| breeding aggression | 15 | 23% |
| ph | 11 | 17% |
| territory | 7 | 11% |
Environmental compromise
Whether a shared temperature, pH and hardness band exists is a necessary condition, not evidence that it suits both animals. This counts how good the overlap actually is.
| Overlap quality | Pairings |
|---|---|
| Workable | 42 |
| Forced compromise — neither animal is where it wants to be | 12 |
| One animal at the edge of its range | 5 |
| No overlap at all | 3 |
| Comfortable for both | 3 |
Every assessed pairing
Grouped by verdict, worst first.
Incompatible (12)
Should not be attempted. At least one factor is expected to cause harm.
- with Blue acara2 concerns
- with Discus4 concerns
- with Electric yellow cichlid4 concerns
- with Firemouth cichlid2 concerns
- with Goldfish3 concerns
- with Iridescent shark3 concerns
- with Kissing gourami1 concern
- with Moonlight gourami3 concerns
- with Oscar4 concerns
- with Rope fish2 concerns
- with Senegal bichir2 concerns
- with Severum5 concerns
Poor match (7)
Workable only in unusual circumstances. Not a pairing to plan around.
Conditional (12)
Can work, but only if the stated conditions are met.
- with American flagfish3 concerns
- with Guppy1 concern
- with Kribensis1 concern
- with Mystery snail1 concern
- with Nerite snail1 concern
- with Pea puffer2 concerns
- with Peppered corydoras1 concern
- with Platy2 concerns
- with Sailfin molly2 concerns
- with Siamese fighting fish3 concerns
- with Swordtail2 concerns
- with Yoyo loach1 concern
Generally compatible (25)
Usually works. Minor points to watch are listed below.
- with Amano shrimp2 concerns
- with Black ruby barb1 concern
- with Bladder snail1 concern
- with Bloodfin tetra2 concerns
- with Bolivian ram1 concern
- with Cardinal tetra2 concerns
- with Celestial pearl danio2 concerns
- with Cherry barb1 concern
- with Cherry shrimp2 concerns
- with Chili rasbora2 concerns
- with Clown loach1 concern
- with Dwarf gourami1 concern
- with Ember tetra1 concern
- with Ghost shrimp1 concern
- with Indian glassfish1 concern
- with Kuhli loach1 concern
- with Neon tetra1 concern
- with Panda corydoras1 concern
- with Peacock gudgeon1 concern
- with Pearl gourami1 concern
- with Rummy-nose tetra2 concerns
- with Scissortail rasbora1 concern
- with Serpae tetra1 concern
- with Tiger barb1 concern
- with Zebra danio1 concern
Compatible (9)
Requirements align and no behavioural conflict is expected.
Verdict distribution
| Verdict | Pairings | What it means |
|---|---|---|
| Generally compatible | 25 | Usually works. Minor points to watch are listed below. |
| Conditional | 12 | Can work, but only if the stated conditions are met. |
| Incompatible | 12 | Should not be attempted. At least one factor is expected to cause harm. |
| Compatible | 9 | Requirements align and no behavioural conflict is expected. |
| Poor match | 7 | Workable only in unusual circumstances. Not a pairing to plan around. |