Say NO. The Gummy Shark is the primary species used for ‘Flake’ though it may also be Whiskery Shark, School Shark, Saw Shark, Elephant Fish, any of the Dogfish family or any one of a variety of other sharks and even rays. School Sharks are listed as ‘Conservation Dependent’ on the EPBC (The Environment Protection and Biodiversity Conservation) Act List of Threatened Species. Shark species are on Greenpeace Australia Pacific’s Seafood Redlist. AMCS lists all Shark species as SAY NO.