Popeye disease is a condition in which a fish's eye swells and bulges from the socket. The eyes may also appear cloudy. When left untreated, popeye disease can cause a fish to lose its eyesight or ...

What is a betta fish? Betta fish—also known as Siamese fighting fish—are among the oldest species of domesticated fish. Their scientific name, Betta splendens, combines two languages: Malay for ...