It's a toothy giant that can grow longer than a horse and heavier than a refrigerator, a fearsome-looking prehistoric fish. To many, it was a freak, a "trash fish" that threatened sportfish, something to be exterminated. But the once-reviled predator is now being seen as a valuable fish in its own right, and as a potentially potent weapon against a more threatening intruder: the invasive Asian carp. Efforts are now underway to reintroduce the alligator gar from Illinois to Tennessee.
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