Reasons why:
* Water Parameters: Goldfish prefer cooler water temperatures (68-72°F), while snails generally thrive in warmer water (72-78°F). This difference in temperature can stress both species.
* Diet: Goldfish are omnivores and consume a variety of foods, including algae, pellets, and flakes. Snails are herbivores and primarily feed on algae and decaying plant matter. This difference in diet can lead to competition for food.
* Habitat: Goldfish are active swimmers and require a larger tank with ample swimming space. Snails are bottom dwellers and prefer a more cluttered environment with hiding places.
* Aggression: Some goldfish species, particularly larger breeds, can be aggressive towards snails, leading to injuries or even death.
* Waste: Goldfish produce a lot of waste, which can pollute the water and negatively impact snail health.
Conclusion:
While some snails, such as pond snails, can tolerate colder temperatures, it is generally not recommended to house them with goldfish. The differences in their water parameters, diet, habitat, and aggression levels make it difficult for both species to thrive in the same environment.
If you are interested in keeping snails, it is best to choose a tank specifically for them.