Since fish are cold blooded, water temperatures play a big part in their behavior. Trout prefer water that is between 56 and 64 degrees, which holds more oxygen. Bass and ...

The parasites are called trematodes. Two species of the flatworms were discovered in California’s freshwater fish, according ...

Iraqi authorities on Monday launched a probe into a mass die-off of fish in the southern marshlands, the latest in a string of such events in recent years.

Low water levels in a northern Colorado lake have left backyards bone dry and are likely behind the death of hundreds of fish.