I guess oysters would be out of the question too

Dioxin alarm puts an end to harbour fishing - National - smh.com.au

From the story above, the dioxin levels in the Sydney Harbour fish must be rather high if this is the recommendation:

"Mr Macdonald said the ban did not apply to bait fishing or recreational fishing but he urged anglers to eat no more than 150 grams of fish caught in the harbour a month."

Moreover, the government hasn't bothered testing for quite a while:

"A spokesman for the minister said fish in the harbour had not been tested since 1990 and were tested last year only because work done at Homebush Bay had shown high levels of dioxin on the harbour floor. The bay, which has been closed to fishing since 1989, was found to have poisonous fish after tests in 1996 and 1998."

So, Homebush Bay has been shut for fishing for years, but it never occurred to the government that fish from there might be caught somewhere else in Sydney Harbour? Can this be a stupid as it sounds?