Can you put goldfish with mollies?

* Water parameters: Goldfish prefer cooler water temperatures (68-72°F) and can tolerate a wider range of pH. Mollies prefer warmer water (72-82°F) and a higher pH. This difference in ideal water conditions can lead to stress and health problems for both species.

* Feeding habits: Goldfish are omnivores and tend to eat a lot, while mollies are mainly herbivores. The different feeding requirements can lead to competition for food and potential overfeeding for the mollies.

* Temperament: Goldfish are generally peaceful but can be quite messy, producing a lot of waste. Mollies are more active and can be easily startled by the goldfish's movements.

What to do instead:

* Keep goldfish and mollies in separate tanks: This is the safest and most ideal option to ensure both species thrive.

* Consider a community tank: If you have a larger tank (at least 50 gallons), you could potentially create a community tank with other fish that are compatible with both goldfish and mollies. However, this requires careful research and planning to ensure all fish are happy and healthy.

It's important to always prioritize the well-being of your fish by choosing tank mates that are compatible in terms of their needs and temperament.