Setting up an aquarium is exciting until you realize that not all fish get along, and some need water conditions that clash..

A team has developed a technique to study how different fish species interact with each other in a coastal region, a breakthrough that helps explain the complex relationships among marine species and ...

. Moving water is cooler and more oxygenated than still water, and fish often congregate in these spots when water temperatures rise. This can be anything from ledges and dams to stream riffles and ...