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 ...

Some pet fish live surprisingly long lives. It is estimated that around 10 per cent of British households own pet fish – making them the third most popular animal to welcome into our homes after cats ...

If you’re considering getting your first freshwater tropical fish aquarium then these are the finned friends that should be topping your list.