National Fisheries have closed down the local hot spot to conduct research on the river.
They will be closing the island off to recreational anglers from September 11 through the 15th.
The island is know to locals for some of the best barramundi fishing in the world.
“It provides an excellent snapshot of barramundi numbers, their age and their health, and is an ongoing part of NT fisheries commitment to monitoring fish stocks,” Mr White said.
“The Territory has an enviable reputation as a haven for recreational fishing and we intend to keep it that way.”
“On average, the site is estimated to contain about 790 barramundi. Last year, there was an estimated total of 1141 and 2006 is likely to be another good year.”