Me too, I read whole thing but there's no negative impacts they mentioned. Also I am not concerned about their ability of walking on the land since United States are not quite tropical rainforests with wet grounds as there is a reason why the fishes of North Amercia don't evolved into walking fish.so is there any specific point this is trying to make? I didnt exactly read anything new about ecology
Walking catfish and bulleye snakeheads were unable to spread out in Florida despite of their "walking" ability.