The Agriculture and Fisheries Department warns that drones and patrols will be used to help catch illegal fishers.
A man has been fined $6000 and had his crab pots seized after being caught with 28 undersized protected crabs and a shovelnose ray at Mud Island in Moreton Bay.
Agricultural Industry Development and Fisheries Minister Mark Furner All fishers need to understand the regulations and requirements around size limits and the proper marking of crab pots.