No question, Australia need to eliminate much of there carp population. That isn't my point. Ken, more like 40 years rather than 20. Here are 3 suggestions. The internet is full of carp success stories. Unfortunately for Brits they are about dead carp.
Millions of pounds of carp are eaten by Americans annually -- some caught and prepared streamside, some smoked or pickled and sold at local fish markets, and still more processed for specialized products such as gefilte fish. High in protein and calcium, and low in fat, processed carp is also widely utilized as a protein fill in both human and pet foods, as well as assorted fertilizers.
Two Rivers [SE Missouri] CEO Angie Yu said the company can process 10,000 pounds of carp each day [for export] with its current one-shift operation.
Holden [a cardiologist] found that carp are an extremely oily species, which means that they contain a lot of Omega 3 fatty acid — a very hot commodity these days, as the oil is believed to reduce the risk of coronary heart disease and to have anti-cancer effects. (A 160 billion dollar industry in 2015)
Don't be so narrow minded about the value of protein.