What kind of fish do not lay eggs?

Certain species of fish, such as livebearers like guppies, mollies, and sWordtails, do not lay eggs; instead, they give birth to live young. Additionally, some unique species, like the certain types of sharks and rays, also exhibit live-bearing reproductive methods. In these cases, the embryos develop inside the female's body, receiving nourishment until they are ready to be born.