Analysis of Social Behavior of Clownfish: A New Experimental Model for Behavioral Endocrinological Research

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It has been well recognized that not only sex-typical social behavior such as aggressive, sex and parental, but also behavioral associated social cognition may be regulated by various hormones acting on the brain. In the present study, we use a sex-changing fish, common clownfish (Amphiprion ocellaris), which is known to form a strong social bonding. In anemonefish, social rank of each individual in a group is clearly defined based on their sex. Therefore it is suitable to study social cognitive behavior that may be critical for the formation of a social group, We have analyzed social behavior in details and established a new experimental model for behavioral endocrine studies for formation, maintenance and modulation of social boding.