This research probably won’t be able to “cure” genetic mutations. But it may offer treatments down the line. You could take a zebrafish that carries a specific mutation — like this muscle disease, for example — and then give it thousands of different drugs and see if any of them improve its symptoms, for example. This kind of drug screening has just been started using the fish, which I talk about a little in the Popular Science article.

As for the “good” mutations, sure, there are lots of them. One article you might find interesting along these lines is the Orchid Children, by David Dobbs: http://www.theatlantic.com/magazine/archive/2009/12/the-science-of-success/307761/

Thanks for reading!