Can Flash Pleco (L204) live with Clown Rasbora?
Caution — with care
Why
- Only a narrow water hardness overlap — keep both around 6–7.5 dGH.
- Large size gap (Flash Pleco (L204) 20" vs Clown Rasbora 4") — the bigger fish may eat the smaller one as they grow.
Sweet spot: both do well at 73–82°F and pH 6.5–7 — aim there.
Side-by-side
| Flash Pleco (L204) | Clown Rasbora | |
|---|---|---|
| Temperature | 72–82°F | 73–82°F |
| pH | 6.5–7.6 | 5.5–7 |
| Hardness (GH) | 6–7.5 dGH | 2–10 dGH |
| Adult size | 20" | 4" |
| Temperament | Peaceful | Peaceful |
| Min tank | 125 gal | 30 gal |
Together, plan on at least 125 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
- Add only full-grown adults — never juveniles, which will be eaten.
Sort it with: GH remineraliser → Aquarium Co-Op
Where to buy
- Flash Pleco (L204): buy at Flip Aquatics · Flip Aquatics live-arrival guarantee
- Clown 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 Flash Pleco (L204) · …with Clown Rasbora