An angler's report allowed them to "confirm the presence" after identifying the fish's mottled brown colouring, a dorsal fin traversing the back and the serpentine noggin from which the fish takes its name.
Northern snakehead are long, thin fish, similar in appearance to the native bowfin.
This is the first time this fish species has been confirmed in Georgia waters.
The task force reports that this fish species eats other fish, frogs, small reptiles, crustaceans, birds and some mammals.
A horrifying invasive fish that can live on land for days is raising concerns after another one was discovered in open waters.
Juvenile northern snakeheads are capable of moving across land.
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Maryland had the first established population of the fish in 2002, and the state has the largest distribution of northern snakeheads, according to the Maryland Department of Natural Resources.
The warning comes on the heels of the Snakehead being found in a pong in Georgia.
Anglers should also note where it was caught - water body, Global Positioning System co-ordinates - and "report their find to their regional Georgia DNR Wildlife Resources Division Fisheries Office".
Georgia DNR advises people who think they've caught a northern snakehead not to release it, but to kill it immediately and freeze it. Remember where and when you found it and immediately report it to the office's Wildlife Resources Division Fisheries Office.
Bettross says that the fish does pose a risk to the local environment since it does not have any natural predators.
Georgia officials advise residents to not release snakehead fish if you come across them. They have shown up on plates in Chinatown in Boston and NY.
The department urges people to photograph the fish, including some close-up shots "of its mouth, fins and tail".