and is the most expensive koi fish ever sold. 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 ...

Koi bettas may be more difficult to find than an average goldfish. They’re sold online and at large or high-end fish stores.

Q: How do the specific color changes in fish like goldfish, betta fish, and koi fish relate to their health or mood? A: Specific color changes often indicate health or stress levels; for instance ...

If you take a walk around San Francisco, it won’t take long before you see a koi fish. Not a real one, of course, although the bright orange-and-white graffiti art has the fluidity of a real fish ...

Many people want a garden pond to keep ornamental fish. The fish animate the scene and bring the garden to life, quite literally. But there is more to introducing fish into a garden than setting ...

And it has prompted more questions than answers. Here's what you need to know about the fish and their role in the dispute: Koi are beautifully hued and expensive carp formally called nishikigoi ...

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.