Fish tanks are living ecosystems that are beautiful to look at and rewarding to maintain. The hobby can be an expensive one, though, so it's important to understand the requirements of the fish ...

Editor's note, June 5, 2018: The government rejected the petition in the summer of 2016, in part because the cyanide test it called for had not been independently validated. A study published in May ...

One of the most popular choices for beginner aquarium owners are Guppies. These are small, brightly coloured fish with elegant tails. They’re also peaceful and easy to breed. Guppies thrive in tanks ...