Fish can be a lively and entertaining addition to your natural swimming pool, and certain species can bring numerous benefits to the aquatic ecosystem.

A new study of giant danios (not pictured) suggests schools of fish save 79 percent more energy in turbulent conditions than fish swimming individually. Gordon Firestein via Wikimedia Commons under CC ...

A campaign to reinstate an outdoor tidal swimming pool in Scarborough is growing with one of its campaigners saying its absence was "like fish without chips". Earlier this year, North Yorkshire ...