It was yesterday after sunset, when the fast had been broken (during Ramadan, the month of fasting, one abstains from food and drink during the daylight hours, but eating and drinking are permitted ...

New genetic analyses of cichlids in Lake Victoria highlight several candidate genes that may drive adaptive radiation and provide evidence for decisive selective events that cause particular genetic ...

Different beak and jaw shapes are illustrative examples of how animal species have adapted to different food sources. In a new study published in the journal Nature, researchers now show how diet ...

We associate nests with shelter, warmth, and a safe retreat—and usually picture a bird's nest made out of twigs, grass and feathers. Yet many other animals take advantage of such refuges, with nests ...

Cichlids build nests from abandoned snail shells. A new study shows that while this behavior is instinctive, the fish become increasingly skilled at it with practice. We associate nests with shelter, ...

WHAT is behavior? In other words, how and why do men and baboons, geese and bowerbirds, pike and sticklebacks, rats and elephants act and react, love and hate, nourish or neglect their young, fight or ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

It all started with the Convict cichlids. The small striped fish, native of Central America, captured Sac State Biology Professor Ron Coleman’s attention in a laboratory at the University of Toronto ...

Cichlids are a striking type of freshwater fish with over 500 species. They're usually found in warmer regions and in various bodies of water, including ponds, rivers, lakes, and streams. Most species ...

Southwest Florida waters are home to some of the Amazon's most prized gamefish. If that sentence sounds a little strange, it should. Amazonian fish don't belong in our ponds, lakes and rivers, but ...