Blue whiting (Micromesistius spp.) is a codfish. Of this genus there are actually 2 species. The smaller one is the Micromesistius poutassou, which is found in the North Atlantic Ocean. The bigger sized Micromesistius australis is a fish of the sub-Antarctic waters. Both are versatile and used for many different purposes such as natural or battered fillets, and even drying.