Amphibian reproduction can by classified by primitive traits that are shared by most fish.
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Amphibian reproduction can by classified by primitive traits that are shared by most fish (Oviparity, Anamniotic Eggs and a Cloaca). They also show derived traits (Metamorphosis, Ovoviviparity and Population Sex Modulation).
=== Oviparous ===
=== Oviparous ===
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* Lay eggs with little or no embryonic development within the mother.
* Lay eggs with little or no embryonic development within the mother.
* Eggs laid singly,in clusters or in strands depending on the species of amphibian.
* Eggs laid singly,in clusters or in strands depending on the species of amphibian.
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=== Ovovivparous ===
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* Evident in a few species of frog and salamander.
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* Ovoviviparous animals develop within eggs that remain within the mother's body up until they hatch or are about to hatch. * * It is similar to vivipary in that the embryo develops within the mother's body.
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* Unlike the embryos of viviparous species, ovoviviparous embryos are nourished by the egg yolk rather than by the mother's body.
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** However, the mother's body does provide gas exchange.