Breeding fish is one of our favorite parts of the aquarium hobby because of the immense satisfaction you get from caring for your pets and seeing them produce the next generation of offspring. Most fish lay eggs, which have a much higher likelihood of getting eaten since the eggs have no natural defenses. In contrast, livebearers (or species that give birth to live young) have a reputation for being easier to breed because the newborns are capable of swimming away and hiding from would-be predators. Learn about these top 10 livebearers — both common and rare — that are fun to breed at home and even sell for profit.