"Black carp originate from China and were first bred for red color mutations (noted around 720 C.E.) that were originally developed into the many fancy goldfish ... a large pond. Koi aren't ...

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.

For Cheryl and Francis Vetter of Wadsworth, Ohio, their backyard koi pond, surrounded by annuals and perennials, catches a ...

They say if you love something, you should set it free. Unless the thing you love is a goldfish. Then the Minnesota DNR wants you to keep that thing on lock. Thousands of common carp in Waseca ...