How fish become male or female is far weirder and more varied than the XX-female, XY-male chromosome system of humans. (Though even the human story can get complicated .) Clownfish, for example
There are a few animal species where females mate with multiple males. One example is the jacana bird, where females mate with several males who then take care of the eggs and offspring. Contrast with clownfish: Clownfish do not practice polygamy, as they typically form pairs consisting of one male and one female.
They set up experiments in the laboratory where they paired male clownfish together and tracked their development. In all, they followed 17 pairs of male clownfish. Within minutes or hours of being put together in a tank, one of the two males emerged as dominant, and began to behave as a female would, the researchers reported.
You can keep 3 clownfish in the same tank, provided the aquarium is large enough and the fish are introduced all together while still juveniles. Although, you run the risk of 2 clowns pairing up and bullying the remaining fish once they reach adulthood. It’s often recommended that you keep no more than 2 (a mated pair) at a time. Though clownfish are not highly threatened, their populations have decreased in some areas. This is because they make up 43% of the global marine ornamental trade, with 75% of these fish captured from the wild. This means, in exploited areas, there is reduced population density. It is important to maintain good practice and protect this unique Mating only occurs on rare occasions, so they should be kept with other clownfish of the opposite sex. Clownfish gender change . Clownfish gender change is one of the many interesting facts about it. Clownfish gender change occurs when there are not enough males in an aquarium to take on a female role and reproduce with other females. zdrgO. 50 466 500 314 970 39 26 253

do clownfish mate with their offspring