What is viviparous?
Most fish lay eggs, but some species give birth to fry. There are two types of viviparous – viviparous and oviparous. The oviparous bear eggs inside, and the fry are born fully formed. They get their food from the deutoplasm. In the case of viviparous, nutrition is obtained directly from the mother. About 15 of the 480 known fish families exhibit some form of live birth. This includes half of all sharks and rays, as well as viviparous carpenters such as guppies, swordsmen, and mollinesians, as well as a number of unusual species.
How do viviparous mate? Continue reading