As for iridescence, river catfish have no scales, but their delicate skin is covered with a protective layer of slime that gives them a shiny glow. These fish are threatened with habitat ...

The Mekong giant catfish is the official freshwater heavyweight champion of the world. According to the Guinness Book of Records, a nine-foot-long individual caught in northern Thailand in 2005 ...

The invasive species is quickly becoming abundant in Maryland’s rivers and outcompeting native fish for food and habitat. Blue catfish are preying on blue crab, menhaden, American eel ...