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Are all invasive species as bad as the Asian carp?

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Asian carp
A jumping Asian carp on the Missouri River. These non-native species can grow up to 110 pounds and outcompete native fish species for food. They have been spreading up the Mississippi River system since escaping from fish farms in the South, and have been seen in Minnesota.
Photo by Jason Jenkins, University of Missouri
Gallery
5 of 5
Zebra mussels
Zebra mussels are an invasive species that has already entered the Great Lakes through ballast water dumped by oceangoing ships. They have also been found in the Mississippi River and in inland lakes.
Photo by Simon van Mechelen, University of Amsterdam
1 of 5
Asian carp
A jumping Asian carp on the Missouri River. These non-native species can grow up to 110 pounds and outcompete native fish species for food. They have been spreading up the Mississippi River system since escaping from fish farms in the South, and have been seen in Minnesota.
Photo by Jason Jenkins, University of Missouri
2 of 5
War on weeds
A sign in Park County, Wyoming. Some ecologists say a militaristic approach to invasive species management can create more harm than good for local environments. Others say drastic measures, such as applying herbicides to large swaths of land, are necessary to control invasives.
Courtesy of Smith et. al.