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 ...
The fish, he explained, was a hybrid of a leather carp and a koi carp and after a 25-minute battle, it was all over. The goldfish that had been a white whale to many was in Mr Hackett's net.