"The angelfish's appeal has to do with its spectacular finnage," says Steve Rybicki of Angels Plus in Olean, N.Y., who has been breeding these South American charmers for three decades.

On occasion, different species of angelfish produce hybrid offspring even more colorful than the parents. By Sabrina Imbler When American painter Bob Ross said, “There are no mistakes ...

A 17-year-old high school student in California has sequenced the genome of the freshwater angelfish (Pterophyllum scalare) for the first time. Indeever Madireddy sequenced the genome of his pet ...