Can Black Neon Tetra live with Discus?
Caution — with care
Why
- Almost no shared temperature: Black Neon Tetra wants 72–82°F and Discus wants 82–88°F, so only 82°F suits both — too fine a margin to actually hold.
- Very different sizes (Discus 8" vs Black Neon Tetra 1.5") — these two need different tanks, and the smaller fish will be out-competed at feeding time.
Sweet spot: both do well at 82–82°F and pH 5.5–7 — aim there.
Side-by-side
| Black Neon Tetra | Discus | |
|---|---|---|
| Temperature | 72–82°F | 82–88°F |
| pH | 5.5–7.5 | 5.5–7 |
| Hardness (GH) | 2–12 dGH | 1–8 dGH |
| Adult size | 1.5" | 8" |
| Temperament | Peaceful | Peaceful |
| Min tank | 15 gal | 55 gal |
Together, plan on at least 55 gallons.
How to make it work
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: An adjustable heater · A larger tank
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Design a tank with Black Neon Tetra, Discus →Everything compatible with Black Neon Tetra · …with Discus