Fancy Goldfish and Mollies, side by side
| Fancy goldfish | Molly | |
|---|---|---|
| Adult size | 5.9 in15 cm | 3.9 in10 cm |
| Smallest tank | 30 gal114 L | 30 gal114 L |
| Keep | One or more | 3 or more |
| Temperature | 64–73 °F18–23 °C | 73–82 °F23–28 °C |
| pH | 7–8.4 | 7.5–8.5 |
| Temperament | Peaceful | Peaceful |
| Swims | At every level | In the middle |
Why it does not work
Goldfish do best with other fancy goldfish.
Better tank mates for fancy goldfish
Goldfish do best with other fancy goldfish. They need cooler water than tropical fish, they eat anything that fits in their mouth, and slow fancies lose the race for food against faster fish.
Better tank mates for mollies
Questions and answers
Can fancy goldfish and mollies live in the same tank?
No, not a good match. Goldfish do best with other fancy goldfish.
What temperature suits fancy goldfish and mollies?
73–73 °F (23–23 °C) suits both. That is a narrow range, so a reliable heater and thermometer matter.
More pairs
- Fancy goldfish and bettas
- Fancy goldfish and guppies
- Fancy goldfish and neon tetras
- Fancy goldfish and angelfish
- Fancy goldfish and bronze corydoras
- Mollies and platies
- Mollies and tiger barbs
- Mollies and dwarf gouramis
- Mollies and cherry shrimp
- All pairs
Based on each species' adult size, water range and temperament (Seriously Fish, FishBase) and the rules of our stocking calculator. Individual fish differ: this is a guide, not a guarantee.