Cleaner wrasse fish, the tiny reef dwellers that pick parasites off larger clients, behave more cooperatively when a potential customer is watching, according to experimental evidence published in ...

For decades, scientists used a mirror experiment to explore whether animals could recognize themselves. In that test, researchers placed a mark on an animal’s body where it could only be seen in a ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. government is mounting an emergency response in an effort to save a unique and endangered fish found off the coast of ...

Before squaring up for a fight, some fish check themselves out in the mirror to make sure they're big enough. This strange behavior was seen in bluestreak cleaner wrasse (Labroides dimidiatus), who ...

Fish appear to spank their children—and it makes their kids more cooperative in their duties, new research has found. These findings imply that this fish may have more advanced and complex social ...

A new study found that subtle differences in an animal’s behavior by midlife can predict how long it is likely to live.

Fish schools, appearing chaotic when splitting and reuniting, actually follow biological and physical rules. This dynamic ...

An international study led by biologists from Monash University and the University of Tuscia has revealed how long-term exposure to pharmaceutical pollutants is dramatically altering fish behavior, ...

Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

University of Otago—Ōtākou Whakaihu Waka scientists have discovered that it takes mere minutes for a species of sex-changing fish to develop dominant behavior after a change in the pecking order. In a ...

The U.S. government is mounting an emergency response in an effort to save a unique and endangered fish found off the coast of Florida. The details are strange. The National Oceanic and Atmospheric ...