Koi may just look like an oversized goldfish, but they're not even remotely related. Koi are actually a type of carp, and today they're some of the most expensive pet fish in the world.

Koi may just look like an oversized goldfish, but they're not even remotely related. Koi are actually a type of carp, and today they're some of the most expensive pet fish in the world.

The male will care for the eggs. However, his loving behavior stops once the new bettas are hatched, and he might eat them if he’s not removed soon after their birth. Koi bettas may be more difficult ...

Steven Smith described the scene he found near his pond as a "massacre" A fish enthusiast from East Dunbartonshire has described the death of his prized Japanese koi carp collection as a "massacre".

“This is the only koi we’ve actually seen. Most fish we run into are just your basics, common carp and the one goldfish we found at Martin Nature Park,” Rayfield said. Once they found the ...