Can fancy goldfish live with black neon tetras?
Verdict
No
No. Fancy goldfish and black neon tetras should not share a tank. Fancy goldfish are coldwater animals (65–74°F); black neon tetras need 73–81°F. They overlap only at 73–74°F, the edge of both ranges.
What to watch
- Deal breakerFancy goldfish are coldwater animals (65–74°F); black neon tetras need 73–81°F. They overlap only at 73–74°F, the edge of both ranges.
- Watch outA grown fancy goldfish may treat small black neon tetras as food, especially at night.
What works
- pH 7–7.5 suits both.
Water side by side
Size to scale
Care at a glance
| Fancy goldfish | Black neon tetra | |
|---|---|---|
| Temperature | 65–74 °F | 73–81 °F |
| pH | 7–8 | 5.5–7.5 |
| Adult size | 6.0 in | 1.5 in |
| Minimum tank | 30 gal | 15 gal |
| Temperament | Peaceful | Peaceful |
| Swims at | All levels | Middle |
| Group | Alone or in pairs | Groups of 6+ |
| Diet | Omnivore | Omnivore |
Better tank mates for fancy goldfish
Better tank mates for black neon tetras
All black neon tetra tank mates
Questions
Can fancy goldfish live with black neon tetras?
No. Fancy goldfish and black neon tetras should not share a tank. Fancy goldfish are coldwater animals (65–74°F); black neon tetras need 73–81°F. They overlap only at 73–74°F, the edge of both ranges.
What temperature suits both fancy goldfish and black neon tetras?
73–74 °F. Fancy goldfish need 65–74 °F, black neon tetras need 73–81 °F.
What size tank do fancy goldfish and black neon tetras need together?
At least 30 gal, set by the fancy goldfish. Add space for each extra fish.