Oh nice, well then maybe you can educate me with some evidence to support your stance?
I allready said all i had to say but probably because of my bad language people skip my rambling messages.
For instance the most hated silver carps( asian carps) eat algae that feed on phosphorus ( algae because they are not plants they need only phosphorus because they can take the nitrogen directly from air likr bacteria).
Most peacefull fish the jumping carp its a harmless filter feeder that eats algae and traps phosphorus into its skeleton thus locking the phosphorus because bones are not soluble in water.
Phosphorus its mostly found in nature as calcium phosphate ( like the bones of the carp).
Phosphorus acumulation has caused the Lake Erie to die of eutrophisation wich led to the establishment of EPA and clear water act( all of these because Lake Erie crashed).
Now a days Lake Erie has 3 times more phosphorus in it than it had when EPA was created and its a time bomb ,dies every autumn from eutrophisation.
If you had jumping silver carps in that lake it would have reduced the phosphate and the lake wouldnt have died from eutrophisation .
Silver carps could have been protecting that native ecosystem without causing any harm ( they eat only algae that are in excess from polution from sewage,detergents ,etc).
You can google eutrophisation and phosphorus cycle and see for yourself how the asian carps can stop it.
Its logical that an ecksystem is better without even the beneficial ,,invasive,, animals or plants ,but once people got there and pour sewage water in the lake for decades and phosphorus builds up ,it becomes an altered enviroment and its much better to protect it than to let it die and all the ecosystem to die from eutrophisation.
Silver carps can heal the lakes and clean the water for free but its not what politicians want.They want monney and if the silver carps dont bring monney they dont care about the enviroment.
They teach you to hate this humble iet magnificent fish and instead they come up with useless wasted monney projects like using harmfull chemicals to clean the phosphate ( LaCl) because selling ( verry inneficient compared to these carps)chemicals fills their pockets with monney.