Scientists have long been captivated by killifish because they tend to pop up in unexplained places with seemingly no apparent sign of origin. While they typically appear in the fresh and brackish ...

Some species of fish can change their egg-laying habits in response to predators in the area in order to survive, according to new research from The University of Texas at Arlington. It has long been ...

Some species of fish can evolve their egg-laying habits in response to predators in the area in order to survive, according to new research. Some species of fish can evolve their egg-laying habits in ...

A question that’s often baffled scientists is how certain species of fish can sometimes appear—and even proliferate—in isolated bodies of water not previously known to harbor them. A new study has ...