Scientists found a “territorial” creature headbutting rivals in a rocky stream of southern China and discovered a new species, a study said. Photo from Qian-Yu Liang via Chen, Li, Tang, Pu and Lei ...

Fishkeeping is a popular hobby enjoyed by over 12 million American households. An aquarium filled with colorful freshwater fish can add natural beauty to your home and help you learn more about marine ...

An invasive species of fish that can live out of water has been found lurking in Canada, experts warn. The Department of Fisheries and Oceans Canada confirmed reports of Misgurnus anguillicaudatus -- ...

Scientists in China found a river creature with scales under its skin and discovered a new species, a study said. Photo from Guibang Xiao via Xiao, Guo, Cao, Lin, Deng, Xiao, Zhou, Zhang and Fang ...

In a stream of southern China filled with plant debris, a pinkish river creature with wrinkly lips swam through the murk, perhaps searching for a meal or a mate. Instead, it caught the attention of ...

Native to the Gila River basin, the loach minnow and spikedace are adapted to the beautiful yet vulnerable ecology of southwestern desert rivers. These rare, pint-sized fish are just two of many river ...