Australia's tropical fish are heading south into cooler waters. These fish are not just visiting. They are settling into the milder "temperate" reefs that used to be too cold for them. As they do, ...

Betta, or Siamese fighting, fish are among "the most popular freshwater aquarium fish in the world," PetMD reports. Native to southeast Asia, this species is known for its range of vibrant hues. There ...

This is the first time a pond loach has been found in the Maritimes region. An invasive species of fish that can live out of water has been found lurking in Canada, experts warn. The Department of ...

Cold-water streams have experienced disproportionate impacts, experiencing more than a 50% decrease in fish abundance over ...