How to manage invasive carp (2 methods)

There are several documented methods for managing invasive carp. Here's one, used in Australia:

"Managing invasive carp (Cyprinus carpio L.) for habitat enhancement at Botany Wetlands, Australia," L. Pinto, N. Chandrasena1, J. Pera, P. Hawkins, D. Eccles, R. Sim, Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 15, Issue 5, pages 447–462, September/October 2005.

Here's another, used in the USA [HT metafilter]: