DNA tests by scientists revealed nine of the 91 fillets sold were scalloped hammerhead, greeneye spurdog or school shark all considered threatened species in Australia.
Why your fish and chips might really be endangered shark 9news.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from 9news.com.au Daily Mail and Mail on Sunday newspapers.
Experts warn that shark is being served up to unsuspecting customers in UK chippies, but how can you tell? MailOnline asked the experts for the signs you re being served shark.