Eight alleged poachers have been caught in possession of more than 150 abalone and crabs in South Australia’s Yorke Peninsula, police have said.

Police received information about suspicious fishing behaviour at Bluff Beach earlier this week from the Yorketown Fisheries office.

On Thursday afternoon, police and fisheries officer intercepted three men and two women at the beach and found 84 abalone allegedly in their possession.

Investigators later went to a Minlaton address and found two men and a women allegedly in possession of 65 abalone and 31 crabs, a majority of which were under the legal size limit.

All suspects were from interstate and were interviewed by fisheries officers.

Their fishing equipment have been seized as part of the prosecution process while the investigation continues.