Fish comparison
Black Neon Tetra vs Bleeding Heart Tetra
How the Black Neon Tetra and Bleeding Heart Tetra compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, Black Neon Tetra vs Bleeding Heart Tetra
The Black Neon Tetra and the Bleeding Heart Tetra are close cousins, both in the Hyphessobrycon group, so at a glance they ask for a lot of the same things. Both are happy somewhere around 23 to 28 °C and pH 5.5 to 7, so a single tank can suit either one. The Black Neon Tetra is the more forgiving of the two, which matters if this is an early tank, while the Bleeding Heart Tetra rewards a bit more attention. If tank space is tight, the Black Neon Tetra needs less room to feel settled; give the Bleeding Heart Tetra the nod when you have the litres to spare.
Group compatibility overview
Excellent fit
Every key parameter overlaps and no major conflicts surfaced.
4 notes
Temperature
- Black Neon Tetra22–28 °C
- Bleeding Heart Tetra23–28 °C
pH
- Black Neon Tetra5.5–7.5
- Bleeding Heart Tetra5.5–7
Hardness
- Black Neon Tetra2–12 dGH
- Bleeding Heart Tetra1–15 dGH
What to plan for
- Black Neon Tetra schools, stock at least 8You've planned for 1 black neon tetra. Black Neon 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.
- Bleeding Heart Tetra schools, stock at least 8You've planned for 1 bleeding heart tetra. Bleeding Heart 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.
- 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.
- 100% 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 |  FishBlack Neon TetraHyphessobrycon herbertaxelrodi |  FishBleeding Heart TetraHyphessobrycon erythrostigma |
|---|---|---|
| Category | Fish | Fish |
| Origin | Paraguay River basin, Brazil | Upper Amazon basin |
| Family | Characidae | Characidae |
| Temperature | 22–28 °C | 23–28 °C |
| pH | 5.5–7.5 | 5.5–7.0 |
| Hardness (dGH) | 2–12 | 1–15 |
| Flow rate | Low to Medium | Low to Medium |
| Min tank | 60 L | 110 L |
| Adult size | 3–4 cm | 6–7 cm |
| Difficulty | 1 / 5 | 2 / 5 |
| Lifespan | 5 yrs | 5–7 yrs |
| Diet | Omnivore | Omnivore |
| Water column | Mid | Mid |
| Schooling | Yes | Yes |
| Plant safe | Yes | Yes |
| Shrimp safe | Mostly (may eat shrimplets) | Yes (with adults) |
Frequently asked questions
Direct answers to the questions search engines and AI assistants surface most often about this species.
Can you keep Black Neon Tetra and Bleeding Heart Tetra together?
Yes. Their temperature and pH ranges overlap around 23 to 28 °C and pH 5.5 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 Black Neon Tetra or the Bleeding Heart Tetra?
The Black Neon Tetra is the easier of the two, closer to very easy, while the Bleeding Heart Tetra leans beginner-friendly.
Do Black Neon Tetra and Bleeding Heart Tetra need the same water?
Close to it. Aim for 23 to 28 °C and pH 5.5 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 Black Neon Tetra and the Bleeding Heart Tetra?
Space. The Black Neon Tetra wants about 60 litres minimum and the Bleeding Heart Tetra around 110, so tank size can settle it.