Meet The Fish That Can Change Its Sex. Hint: It Happens When Another Fish Disappears

In response to social cues, individual clownfish will switch sexes. Cutting-edge research reveals the neural and genetic ...

Fish use more energy to stay still than previously thought

Many fish appear to hang effortlessly in the water while they wait for prey, defend a nest or pause between bursts of activity. But our research shows that this quiet stillness is anything but ...