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. (Includes video).
Click here for original story, For anemonefish, male-to-female sex change happens first in the brain
Source: Phys.org