This piqued my interest so I did some reading. Yes, looks like these fish are considered a coldwater fish, being native to rivers in China. They get huge in the wild, over 3 feet in length. One of their favorite foods is filamentous algae, which I can assume is one of the reasons for this inquiry. I'm interested to hear more. I wonder if, since they prefer cold, moving, well oxygenated water, if their spawning would be indicative of that, much like trout. Having a fish incapable of spawning in a pond might be a huge factor in potentially using this species as a weapon against FA. I'm very interested in hearing more.
Also read they are illegal in the UK, so I wonder what invasive tendencies they may have.