Fish comparison
False Julii Cory vs Sterbai Corydoras
How the False Julii Cory and Sterbai Corydoras compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, False Julii Cory vs Sterbai Corydoras
The False Julii Cory and the Sterbai Corydoras are close cousins, both in the Corydoras group, so at a glance they ask for a lot of the same things. Both are happy somewhere around 24 to 26 °C and pH 6 to 7.5, so a single tank can suit either one. The False Julii Cory is the more forgiving of the two, which matters if this is an early tank, while the Sterbai Corydoras rewards a bit more attention. 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
Good fit
Workable as-is, only minor advisories to plan around.
1 warning · 2 notes
Temperature
- False Julii Cory22–26 °C
- Sterbai Corydoras24–30 °C
pH
- False Julii Cory6–7.5
- Sterbai Corydoras6–7.5
Hardness
- False Julii Cory2–15 dGH
- Sterbai Corydoras3–15 dGH
What to plan for
- False Julii Cory schools, stock at least 6You've planned for 1 false julii cory. False Julii Cory need a group of at least 6 to feel safe and shoal naturally, below that they're stressed and lose colour. Dial up the count, or remove the species.
- Sterbai Corydoras schools, stock at least 6You've planned for 1 sterbai corydoras. Sterbai Corydoras need a group of at least 6 to feel safe and shoal naturally, below that they're stressed and lose colour. Dial up the count, or remove the species.
- All fish are bottom-dwellersTop and middle of the tank will look empty, and surface food drops uneaten. Add a mid or top species (rasboras, danios, hatchetfish) to use the whole water column.
Full attributes
Every parameter, side by side| Parameter |  FishFalse Julii CoryCorydoras trilineatus |  FishSterbai CorydorasCorydoras sterbai |
|---|---|---|
| Category | Fish | Fish |
| Origin | Upper Amazon | Rio Guaporé basin, Brazil & Bolivia |
| Family | Callichthyidae | Callichthyidae |
| Temperature | 22–26 °C | 24–30 °C |
| pH | 6.0–7.5 | 6.0–7.5 |
| Hardness (dGH) | 2–15 | 3–15 |
| Flow rate | Medium | Low to Medium |
| Min tank | 75 L | 75 L |
| Adult size | 5–6 cm | 6–7 cm |
| Difficulty | 1 / 5 | 2 / 5 |
| Lifespan | 5–7 yrs | 5–10 yrs |
| Diet | Omnivore | Omnivore (sinking) |
| Water column | Bottom | Bottom |
| Schooling | Yes | Yes |
| Plant safe | Yes | Yes |
| Shrimp safe | Yes (with adults) | Yes (adult shrimp) |
Frequently asked questions
Direct answers to the questions search engines and AI assistants surface most often about this species.
Can you keep False Julii Cory and Sterbai Corydoras together?
Yes. Their temperature and pH ranges overlap around 24 to 26 °C and pH 6 to 7.5, 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 False Julii Cory or the Sterbai Corydoras?
The False Julii Cory is the easier of the two, closer to very easy, while the Sterbai Corydoras leans beginner-friendly.
Do False Julii Cory and Sterbai Corydoras need the same water?
Close to it. Aim for 24 to 26 °C and pH 6 to 7.5 and you're in the shared sweet spot for both. Full ranges are in the table above.
What's the main difference between the False Julii Cory and the Sterbai Corydoras?
It comes down to look, size and pace rather than one being flatly better. The table above lays the numbers out row by row.