For anemonefish, male-to-female sex change happens first in the brain

www.sciencedaily.com

The anemonefish is a gender-bending marvel. It starts out as a male, but can switch to female when circumstances allow, for example, when the only female present dies or disappears. In a new study, researchers found that the male-to-female sex-change occurs first in the fish's brain and only later involves the gonads - sometimes after a delay of months or years.

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