Fish comparison
Chili Rasbora vs Clown Killifish
How the Chili Rasbora and Clown Killifish compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, Chili Rasbora vs Clown Killifish
The Chili Rasbora and the Clown Killifish come up together a lot when people are choosing a fish, and they are close enough to weigh side by side. Both are happy somewhere around 24 to 26 °C and pH 4.5 to 6.5, so a single tank can suit either one. Neither is harder than the other to keep, so the choice comes down to look and stocking rather than skill. Read the full care notes on each below and pick the one whose look and pace fit the tank you're building.
Group compatibility overview
Excellent fit
Every key parameter overlaps and no major conflicts surfaced.
3 notes
Temperature
- Chili Rasbora24–28 °C
- Clown Killifish22–26 °C
pH
- Chili Rasbora4–6.5
- Clown Killifish4.5–6.5
Hardness
- Chili Rasbora1–4 dGH
- Clown Killifish1–6 dGH
What to plan for
- Chili Rasbora schools, stock at least 10You've planned for 1 chili rasbora. Chili Rasbora need a group of at least 10 to feel safe and shoal naturally, below that they're stressed and lose colour. Dial up the count, or remove the species.
- No bottom teamNo bottom-dwelling fish or shrimp. A small group of corydoras or a shrimp colony picks up leftover food and keeps detritus in check.
- 67% of your fish swim in the topHeavy concentration in a single zone. Spreading stocking across all three levels makes the tank read fuller for the same bioload.
Full attributes
Every parameter, side by side| Parameter |  FishChili RasboraBoraras brigittae |  FishClown KillifishEpiplatys annulatus |
|---|---|---|
| Category | Fish | Fish |
| Origin | Southwestern Borneo blackwater swamps | Coastal Sierra Leone, Guinea, Liberia |
| Family | Cyprinidae | Nothobranchiidae |
| Temperature | 24–28 °C | 22–26 °C |
| pH | 4.0–6.5 | 4.5–6.5 |
| Hardness (dGH) | 1–4 | 1–6 |
| Flow rate | Still to Low | Still |
| Min tank | 30 L | 30 L |
| Adult size | 1.7–2 cm | 3–3.5 cm |
| Difficulty | 3 / 5 | 3 / 5 |
| Lifespan | 3–4 yrs | 3–4 yrs |
| Diet | Micropredator | Micropredator |
| Water column | Mid to Top | Top |
| Schooling | Yes | Loose group |
| Plant safe | Yes | Yes |
| Shrimp safe | Yes (adults and adult shrimp) | Yes (adults only, will hunt shrimplets) |
Frequently asked questions
Direct answers to the questions search engines and AI assistants surface most often about this species.
Can you keep Chili Rasbora and Clown Killifish together?
Yes. Their temperature and pH ranges overlap around 24 to 26 °C and pH 4.5 to 6.5, so one set of water conditions keeps both comfortable. Match group sizes and cover the usual planted-tank basics and they share a tank fine.
Which is easier to keep, the Chili Rasbora or the Clown Killifish?
They sit at the same care level, both middle-of-the-road, so neither is the obvious beginner pick. The decision is really about the look you're after.
Do Chili Rasbora and Clown Killifish need the same water?
Close to it. Aim for 24 to 26 °C and pH 4.5 to 6.5 and you're in the shared sweet spot for both. Full ranges are in the table above.
What's the main difference between the Chili Rasbora and the Clown Killifish?
It comes down to look, size and pace rather than one being flatly better. The table above lays the numbers out row by row.