Fish comparison
Ember Tetra vs Florida Flagfish
How the Ember Tetra and Florida Flagfish compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, Ember Tetra vs Florida Flagfish
The Ember Tetra and the Florida Flagfish 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 23 to 26 °C and pH 6.5 to 7, so a single tank can suit either one. The Florida Flagfish is the more forgiving of the two, which matters if this is an early tank, while the Ember Tetra rewards a bit more attention. If tank space is tight, the Ember Tetra needs less room to feel settled; give the Florida Flagfish the nod when you have the litres to spare.
Group compatibility overview
Excellent fit
Every key parameter overlaps and no major conflicts surfaced.
1 note
Temperature
- Ember Tetra23–29 °C
- Florida Flagfish18–26 °C
pH
- Ember Tetra5.5–7
- Florida Flagfish6.5–8
Hardness
- Ember Tetra1–10 dGH
- Florida Flagfish5–20 dGH
What to plan for
- Ember Tetra schools, stock at least 8You've planned for 1 ember tetra. Ember Tetra need a group of at least 8 to feel safe and shoal naturally, below that they're stressed and lose colour. Dial up the count, or remove the species.
Full attributes
Every parameter, side by side| Parameter |  FishEmber TetraHyphessobrycon amandae |  FishFlorida FlagfishJordanella floridae |
|---|---|---|
| Category | Fish | Fish |
| Origin | Rio das Mortes basin, Brazil | Florida and the southeastern United States |
| Family | Characidae | Cyprinodontidae |
| Temperature | 23–29 °C | 18–26 °C |
| pH | 5.5–7.0 | 6.5–8.0 |
| Hardness (dGH) | 1–10 | 5–20 |
| Flow rate | Low | Low to Medium |
| Min tank | 40 L | 75 L |
| Adult size | 2 cm | 5–6 cm |
| Difficulty | 2 / 5 | 1 / 5 |
| Lifespan | 2–4 yrs | 3–5 yrs |
| Diet | Omnivore | Omnivore (heavy algae grazer) |
| Water column | Mid | All |
| Schooling | Yes | Loose group |
| Plant safe | Yes | Yes |
| Shrimp safe | Yes (adults safe with adult shrimp) | Adults only |
Frequently asked questions
Direct answers to the questions search engines and AI assistants surface most often about this species.
Can you keep Ember Tetra and Florida Flagfish together?
Yes. Their temperature and pH ranges overlap around 23 to 26 °C and pH 6.5 to 7, 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 Ember Tetra or the Florida Flagfish?
The Florida Flagfish is the easier of the two, closer to very easy, while the Ember Tetra leans beginner-friendly.
Do Ember Tetra and Florida Flagfish need the same water?
Close to it. Aim for 23 to 26 °C and pH 6.5 to 7 and you're in the shared sweet spot for both. Full ranges are in the table above.
What's the main difference between the Ember Tetra and the Florida Flagfish?
Temperament is the big one. The Ember Tetra is peaceful and the Florida Flagfish is semi-aggressive, which changes who you can house them with.