There are several Commercial Scallop beds fished commercially in Commonwealth, Victorian and Tasmanian waters. These beds often contain different age classes of scallop and most have been fished at some stage in the past. Commercial Scallops in Port Phillip Bay (Victoria) are genetically distinct from those in the D’Entrecasteaux Channel (Tasmania), and also differ from conspecifics in most other locations in south eastern Australia . The genetic structure of Commercial Scallops in Bass Strait is complex and unclear . Here, assessment of stock status is reported at the management unit level—Bass Strait Central Zone Scallop Fishery (Commonwealth), Ocean Scallop Fishery (Victoria), Port Phillip Bay Dive Scallop Fishery (Victoria) and Tasmanian Scallop Fishery.