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 than ...

The clownfish-anemone living arrangement is one of the most widely recognized examples of symbiosis. Researchers have made a breakthrough in understanding how anemonefish can live safely among sea ...

Clown anemonefish have territorial tendencies. Unlike the freewheeling, fun-loving protagonist of Finding Nemo, real life clown anemonefish are extremely hostile – even toward human divers. "I have ...

Scientists reveal new lineages of giant sea anemones in Japan and their surprising associations with anemonefish. The scientists discovered that anemonefish are better at distinguishing different ...

Several anemonefish or clownfish share one anemone, with the largest fish being a female. This is a trio of common clownfish (Amphiprion ocellaris). Dauin, Philippines. (Credit: Klaus Stiefel / CC ...

Like the father in 'Finding Nemo,' anemonefish dads will do almost anything to support their offspring. Their parenting instincts are so strong that if you give a bachelor anemonefish eggs from an ...

Scientists have long assumed that anemonefish's tight-knit relationship with sea anemones, their protective hosts, was the main engine behind their evolutionary diversification. But the team wondered ...

Two brain-signaling molecules control how anemonefish dads care for their young and respond to nest intruders, researchers report in a new study. Because there are many similarities in brain structure ...

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 showing ...