These unique fish have the nickname "iridescent shark catfish," a seemingly ill-suited comparison for a toothless, freshwater fish. The nickname arises from its tendency to swim close to the ...

The distinctive bristlenose pleco is a favorite among fish enthusiasts – and it’s no wonder. They are visually stunning, ...

It may shock some people to learn that goldfish can live twice as long as a dog. They’re just one of several fish species ...

Other examples of freshwater fish include tilapia and walking catfish. McIntyre recently conducted a global analysis of riverine fisheries—and the threats they face—and determined there is an ...

It unseated the previous record-holder, a 646lb (293kg) Mekong giant catfish caught in Thailand in 2005. There is no official record-keeping or database of the world's biggest freshwater fish.

At first, Guillermo was catching native fish, such as the various kinds of catfish which inhabit the river. But then a giant freshwater fish arrived, known locally as paiche or Arapaima gigas ...