CANBERRA (Reuters) - Turning off the television, picking up a crossword and eating more fish could be the key to a better memory, an Australian survey has found. Results of the on-line survey of almost 30,000 people, conducted as part of Australia's science week, also found people who read fiction had better memories than those who don't, while heavy drinkers found it more difficult to recall names. But neuro-psychologist Nancy Pachana said television was not necessarily bad for memory, with wider health and diet and an active lifestyle more crucial to a good memory. "Your memory is dependent on good...