We often think of fish as carefree swimmers in the ocean, reacting to the world around them without much forethought. However, new research suggests that our marine cousins may be more cognizant ...

This study used fish that had not matured and were in a lab setting, but the team still observed the same size-based hierarchy. The largest juvenile took on the alpha role and led the charge ...

New research suggests that the fish may be counting vertical bars on intruders to determine their threat level, and to inform the social hierarchy governing their sea anemone colonies. Figure ...