This special issue presents a set of papers presented during the 12th International Symposium on the Biology and Management of Coregonid Fishes, held in Russia, in Siberia on the coast of Lake Baikal. For this symposium, the long-lasting tradition of publication in a periodical book was transformed to compiling selected articles into a special issue of a peer-reviewed journal because of the increasing requirement for researchers around the world to publish articles in established journals. This issue includes 9 papers shedding light on different aspects of coregonid biology and the management of their populations.