Fish comparison
Chili Rasbora vs Dwarf Puffer
How the Chili Rasbora and Dwarf Puffer compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, Chili Rasbora vs Dwarf Puffer
The Chili Rasbora and the Dwarf Puffer 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 28 °C and pH 6.5 to 6.5, so a single tank can suit either one. The Chili Rasbora is the more forgiving of the two, which matters if this is an early tank, while the Dwarf Puffer rewards a bit more attention. If tank space is tight, the Chili Rasbora needs less room to feel settled; give the Dwarf Puffer the nod when you have the litres to spare.
Group compatibility overview
Multiple conflicts
Real tension in this combination, likely needs a swap.
1 conflict · 1 warning · 4 notes
Temperature
- Chili Rasbora24–28 °C
- Dwarf Puffer22–28 °C
pH
- Chili Rasbora4–6.5
- Dwarf Puffer6.5–7.5
Hardness
- Chili Rasbora1–4 dGH
- Dwarf Puffer5–15 dGH
What to plan for
- Hardness mismatchThe selected species can't share a hardness window. Soft-water species (CRS, cardinals) and hard-water species (livebearers, vals) need different tanks.
- Narrow pH overlapTarget pH is 6.5–6.5. Test weekly; use buffered substrate or remineraliser to keep it stable.
- 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.
- Demanding species presentDwarf Puffer are difficulty 4+. Stable parameters and weekly maintenance are non-negotiable.
- 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 midHeavy 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 |  FishDwarf PufferCarinotetraodon travancoricus |
|---|---|---|
| Category | Fish | Fish |
| Origin | Southwestern Borneo blackwater swamps | Western Ghats rivers and pools, India (Kerala) |
| Family | Cyprinidae | Tetraodontidae |
| Temperature | 24–28 °C | 22–28 °C |
| pH | 4.0–6.5 | 6.5–7.5 |
| Hardness (dGH) | 1–4 | 5–15 |
| Flow rate | Still to Low | Low |
| Min tank | 30 L | 40 L (single); 75 L for a small group |
| Adult size | 1.7–2 cm | 2.5–3.5 cm |
| Difficulty | 3 / 5 | 4 / 5 |
| Lifespan | 3–4 yrs | 4–5 yrs |
| Diet | Micropredator | Carnivore (snail specialist) |
| Water column | Mid to Top | Mid |
| Schooling | Yes | Solitary or harem (1M:2F+) |
| Plant safe | Yes | Yes |
| Shrimp safe | Yes (adults and adult shrimp) | No (will eat shrimp) |
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 Dwarf Puffer together?
Yes. Their temperature and pH ranges overlap around 24 to 28 °C and pH 6.5 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 Dwarf Puffer?
The Chili Rasbora is the easier of the two, closer to middle-of-the-road, while the Dwarf Puffer leans demanding.
Do Chili Rasbora and Dwarf Puffer need the same water?
Close to it. Aim for 24 to 28 °C and pH 6.5 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 Dwarf Puffer?
Temperament is the big one. The Chili Rasbora is peaceful and the Dwarf Puffer is semi-aggressive, which changes who you can house them with.