Changes

* Mostly  seen in Anemone and some Cichlid species.

* Mostly  seen in Anemone and some Cichlid species.

== Polygyny ==

== Polygymy ==

* One male and two or more females

* One male and two or more females

* Common when males form a harem, protecting the females that make up the harem from other sexually active males.

* Common when males form a harem, protecting the females that make up the harem from other sexually active males.

* Polygyny may also occur as a result of '''Lekking'''.  

* Polygyny may also occur as a result of '''Lekking'''.  

** Lekking is where all the males of an area gather together in a 'Lek' to display. Females visit the Lek, chose a male and leave with him to mate. The male returns to the 'Lek' after mating, and may then be chosen by another female. Thus lekking often results in Polygyny.

** Lekking is where all the males of an area gather together in a 'Lek' to display. Females visit the Lek, chose a male and leave with him to mate. The male returns to the 'Lek' after mating, and may then be chosen by another female. Thus lekking often results in Polygymy.

== Polyandry==

== Polyandry==