sentence: Many fish change sex over the course of their life.
sentences_after: This phenomenon is called 'sequential hermaphroditism'. In clownfish, smaller fish are male, and the dominant and largest fish in a group becomes female. Sequential hermaphrodites may produce both types of gametes over the course of their lifetime, but at any given point they are either female or male. Trends in Ecology and Evolution' '21', February.
concept_name: fish
headings: Sex determination Determination by the environment
categories: Classical genetics Developmental biology Cell biology Biological reproduction