Recreational fishers say they feel they have been singled out in the state government's newly announced fishing restrictions designed to protect species threatened by the algal bloom.

The South Australian government has announced temporary restrictions for recreational fishers in the Gulf St Vincent/ Kangaroo Island Zone and the Spencer Gulf as the harmful algal bloom has led to a decline in fish numbers.

A recent rapid stock assessment has recorded declining numbers of calamari, garfish, King George Whiting and blue crab.

From November 1, bag and boat limits for recreational fishers in the Gulf St Vincent/Kangaroo Island Zone will be halved.

Limits in the Spencer Gulf will also be halved for the four affected fish species.

Commercial fishing in the Gulf St Vincent will be temporarily

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