Can Wild Betta Splendens live with Harlequin Rasbora?
Not recommended
Why
- Wild Betta Splendens is aggressive and will attack the peaceful Harlequin Rasbora.
- Only a narrow water hardness overlap — keep both around 6–7.5 dGH.
- Wild Betta Splendens is large enough to threaten a small Harlequin Rasbora — usually fine once both are adult, but watch new additions.
Side-by-side
| Wild Betta Splendens | Harlequin Rasbora | |
|---|---|---|
| Temperature | 75–86°F | 72–80°F |
| pH | 6.5–7.6 | 6–7.5 |
| Hardness (GH) | 6–7.5 dGH | 2–12 dGH |
| Adult size | 2.5" | 1.75" |
| Temperament | Aggressive | Peaceful |
| Min tank | 10 gal | 15 gal |
Together, plan on at least 15 gallons.
Compatible alternatives
Instead of Wild Betta Splendens (to keep Harlequin Rasbora):
- Sparkling Gourami — 1.5", peaceful buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Betta (Siamese Fighting Fish) — 2.5", semi-aggressive buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Platy — 2.5", peaceful buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Instead of Harlequin Rasbora (to keep Wild Betta Splendens):
- Black Skirt Tetra — 2.5", semi-aggressive buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Tiger Barb — 2.75", semi-aggressive buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Blue Gourami — 6", semi-aggressive buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Where to buy
- Wild Betta Splendens: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Harlequin Rasbora: buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
Live-animal shipping: add a heat pack below 50°F, expect weather holds above 90°F, and schedule delivery for a moderate week when someone can receive it promptly.
Build a full tank around this stocking →Everything compatible with Wild Betta Splendens · …with Harlequin Rasbora