egg Definition and species introduction of viviparous fish
Black Mary fish

Ovoviviparous fish are fish eggs that are fertilized inside the fish. A growth method developed in the body.
Introduction to ovoviviparous fish: Compared to oviparous fish, ovoviviparous female fish do not remove their eggs from the body. The eggs are fertilized and hatched in the body (cloaca). Although the fertilized egg of an ovoviviparous egg develops in the mother's body, the relationship between the embryonic fish and the mother is not very close. The nutrients required for embryonic development still mainly rely on absorbing nutrients from the yolk of the egg itself. The mother plays an important role in the protection and protection of the young fish. Hatching efficiency.
So what are the fish that are ovoviviparous? The ones we rarely see in the market include guppies (definitely introduced), black Mary fish, swordtail fish, moon fish, mosquito fish, etc., which are what we call killifish, and these are all oviviviparous fish.

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