Surrogate Fish Could Save Endangered Brethren

When Japanese scientists found a way to make one species of fish lay the eggs of another, some dismissed the work as a genetic parlor trick. But scientists who work with rare and highly-prized fish see a potential breakthrough. The new technique could save critically endangered fish

Last week, a team of scientists used the technique to inject cells from an endangered species of salmon into trout. If all goes well, the trout should produce salmon.

The Japanese researcher who developed technique sees it as a way to not only save endangered fish species, but to beef up the stocks of the heavily fished blue fin tuna.

Some researchers are skeptical of the technique and worry that the money being spent on the program could be better used trying to protect the fish and the environment they live in.

And an expert with the National Oceanic and Atmospheric Administration says fish raised in hatcheries, as the scientists' fish would be, can develop numerous problems that limit their chances of surviving in the wild.

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