Is a fish born alive or eggs?

Most fish species lay eggs, which hatch into small fish called fry. However, there are some fish species that give birth to live young. These fish are known as viviparous fish. Viviparous fish have a special organ called a uterus, where the fertilized eggs develop and grow until they are ready to be born. Some common examples of viviparous fish include guppies, mollies, and platys.