Can a female goldfish have babies in small tank?

It's highly unlikely a female goldfish will have babies in a small tank. Here's why:

* Space: Goldfish need a lot of space to breed successfully. A small tank won't provide the room for the eggs to be laid and fertilized, nor will it allow the fry (baby goldfish) to develop properly.

* Water Quality: Breeding requires pristine water conditions. Small tanks are harder to maintain than larger ones, making it difficult to keep the water clean enough for successful breeding.

* Cannibalism: Goldfish are known to eat their own eggs and fry. This is more likely to happen in a small tank where there's less space to hide and less water flow to disperse the scent of the eggs.

Even if a female goldfish does lay eggs in a small tank, the chances of them hatching and the fry surviving are extremely low. It's much better to focus on providing your goldfish with a healthy and comfortable environment instead of attempting to breed them in a small space.

If you're interested in breeding goldfish, it's important to:

* Do your research: Understand the needs of goldfish and their breeding habits.

* Provide a large tank: A tank of at least 55 gallons is recommended for breeding.

* Ensure proper water quality: Maintain optimal water parameters for breeding success.

* Separate the parents: Male and female goldfish should be separated during the breeding process to avoid aggression or eating the eggs.

* Be prepared to care for the fry: Raising fry requires specialized equipment and knowledge.