If your aquarium feels a little blah, maybe it’s missing some bold personalities. We’re talking fins that flash like neon signs and colors that could outshine a fashion runway.

Owners should also watch out for infection and diseases such as fin rot, dropsy, and swim bladder disease. While Betta fish can tolerate dirty water for a short period, long exposure can cause ...

Their streamlined torpedo shape helps them gather enough underwater speed to break the surface, and their large, wing-like pectoral fins get them airborne. Flying fish are thought to have evolved ...