There are a variety of diseases that can affect their health and longevity. It's essential to understand what illnesses that ...

This is only partially true. What’s more, being in a small tank can stunt a goldfish’s growth and lead to health problems.

Scientists have proved goldfish do have good memories and are able to navigate their surroundings. A team from Oxford University trained nine fish to travel 70cm (2.3ft) and back, receiving a food ...