[Fishslayer99]

Originally Posted by jares

perch and walleye are native, and part of the natural ecosystem, whereas carp are non-native or introduced

someone putting perch in your local trout pond doesn't compare whatsoever to an invasive species taking over entire watersheds. Environmental effects include out competing native fish for habitat; loss of native fish species; changing the type of fishery via alteration of fish community structure, food chains, and habitat alteration/destruction. After a while they become the dominant fish species.

bingo!!!