Thought to be a protein solution for a growing nation, carp fell out of favor, but the invasive species remains abundant in ...

I mean, just take a look at the koi's wild relative, the common carp. Its dark colors would be considered unattractive for a koi, but it's perfect protection against predators in the wild.

Light gold to brown in color with reddish fins, common carp are originally from Eurasia, specifically the Caspian Sea. They were first introduced to New York as early as 1830 but are found ...