The adventures of a Colorado college student's pet fish continue. Southwest Airlines wouldn't let Lanice Powless take her pink pet Betta fish "Cassie" on her flight home to California last week.

Betta fish are one of the most popular aquarium fish in the world. Here is what to know about bettas, including how long they live.

Scientists found that the fish were gradually domesticated like dog breeds into the beautiful shapes and colors that turn up today in pet stores. Science | The 1,000-Year Secret That Made Betta ...

Max, a deep-blue colored betta fish, won the gold medal in the 2023 Betta Winter Olympics after being trained by Lily LaBrozzi, 5, of Pine, a kindergartner at Hance Elementary School.