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Re: 'hybrid' freshwater fish ?
Another use of hybrid fish is pest control. Some folk have started using fish with 3 copies of their chromosomes to eat milfoil. A simple chemical (can't remember which) at fertilization stops the chromosomal seperation process creating polyploid fish, which are sterile.
Its' not really a hybrid, but its a cool use of fish.
(I think it's the striped bass, but i'm not sure. Thought they were predators...)
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