Very nice article.
We have plenty of issues with grass carps here in California. As the article stated, once they reach around 20 to 24 inches, they become extremely lazy. Those who don't remove the grown one to replace with younger ones, there will be massive issues to come later. Use them with extreme caution. As the list indicated, mechanical removal must be the first method, in conjunction to source control. The source is the introduction of nutrients into the pond. If the pond is used to intercept nutrients run-offs, then you have no choice but to deploy various method to mechanically extract the weeds and algae. Always remember that there are compounding effects when applying blockers/capping agents and herbicides.
My family and I use our hunting bows to convert them to carp hunting bows. Every season, we assist the lake and pond management with no limit killing. Our pets and family love the limited meals provided by the carp's, but our plants love the additional nutrients from the ground up carcasses. We can't harvest enough carps to make seasoned patties quick enough for our hungry pack. 100lbs of carp, if we're lucky, yield about 36lbs of edible meat. Yes, carp meat is awesome with proper seasoning and cooking methods.