I dont mean for this to be a personal attack, I just think its a mixup with common names.
Not at all. That is why the scientific community uses Latin names - to avoid this cultural common-name mishmash. I'll take a look over at spearboard and see what the heck they are eating
By the way, the invasive grass carp (superior mouth, planktivore) is all but fished out of its native Asian waters. Conversely, large-mouth bass and bluegills have destroyed ecosystems in Japan and Europe.
There is a new selection pressure for all animals of the world - make every effort to taste bad to humans.