Can Green Neon Tetra live with Marbled Crayfish?
Caution — with care
Why
- Marbled Crayfish can grab Green Neon Tetra while it sleeps — only fast mid/top-water fish are reasonably safe.
- Only a narrow pH overlap — keep both around 6.5–6.5.
- Only a narrow water hardness overlap — keep both around 5–5 dGH.
Sweet spot: both do well at 75–77°F and pH 6.5–6.5 — aim there.
Side-by-side
| Green Neon Tetra | Marbled Crayfish | |
|---|---|---|
| Temperature | 75–84°F | 64–77°F |
| pH | 4–6.5 | 6.5–8 |
| Hardness (GH) | 1–5 dGH | 5–20 dGH |
| Adult size | 1" | 5" |
| Temperament | Peaceful | Aggressive |
| Min tank | 10 gal | 30 gal |
Together, plan on at least 30 gallons.
How to make it work
- Only combine with fast, mid/top-water fish and give the tankmates plenty of escape routes.
- Target the overlapping water-parameter range and acclimate slowly.
Sort it with: GH remineraliser
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Design a tank with Green Neon Tetra, Marbled Crayfish →Everything compatible with Green Neon Tetra · …with Marbled Crayfish