The rivers around Launceston such as the South Esk, Macquarie and Brumbys Creek are favourites. On the Central plateau the man-made lakes such as Arthurs and Great Lake are the most popular lake fisheries. An area know as the Western Lakes is within the Central Plateau World Heritage Area, and contains more than 3000 lakes, ponds and tarns, most with wild brown trout in them ranging from 0.5kg (1lb) to 5kg (10lbs) in size. This is the jewel in Tasmania’s fishing crown! Fly Fishing around Hobart is popular in the Derwent and Huon rivers, and their tributaries.
Tasmania has hundreds of inland waters that are open to the public for fishing, including waters on private land such as farm dams. Most inland waters are open for angling in line with the brown trout season, which runs from the first Saturday of August in any year to the Sunday nearest the 30 April in the next year. A smaller number of rainbow waters are open in line with the rainbow trout season which runs from the Saturday nearest to 1 October in any year to the Sunday nearest 31 May in the following year. There are also a number of for fishing. – ref Inland Fisheries Service
Deciding on where to fish will depend primarily on your relative experience, your preferred fishing method, the fish species you are targeting and the time of the year as well as other factors such as angler access and weather.