Japanese fish sex

Description:Behaviour behaviour , coral reefs , marine , mating Aileen Cudmore When certain conditions arise, the bluestreak cleaner wrasse is able to change sex, usually from female to male. Scientists puzzle over the possible circumstances that might lead a male fish to shift sex and become female. The ability to change sex from male to female or vice versa what is known as sequential hermaphroditism is surprisingly common in the animal kingdom, especially amongst certain species of fish, jellyfish, and gastropods. Many reef fish such as wrasses, for instance, that are born female are able change sex to male protogyny during their lifetime. This is usually driven by the loss of the dominant male, allowing the largest formerly female to then take control of the harem. The reverse, when a male becomes female, rarely occurs amongst these fish species, and the infrequency of these events makes it difficult for scientists to understand why this might ever happen.

Views: 7830 Date: 2018-03-19 Favorited: 27