The annual three-month barramundi closure applies in east coast waters from midday 1 November 2011 until midday 1 February 2012.

Queensland Boating and Fisheries Patrol District Officer Dan Stampa said the closed season was set aside at this time each year to help protect barramundi during spawning, which was a vulnerable time in their life cycle.

"The closures allow fish to spawn and stocks to replenish to ensure there are healthy fish stores for current and future generations of Queensland anglers," he said.

"During spawning, millions of eggs will be laid, but only a few will survive the natural selection process," he said.

"This is because barramundi typically aggregate in one area to spawn, making them more vulnerable to predators.

"This behaviour also makes them more vulnerable to fishing pressure so it is important that barramundi are not targeted for catch and release during a closed season as the stress of capture may prevent the fish from spawning.

"Closed seasons ensure that barramundi will be around for future generations to enjoy."