Possible use of flooded quarries for fish farming

The initial results on possibilities of using exhausted quarries for fish farming are presented by the authors in the article. The flooded quarries have been analyzed from the point of view of their suitability for this purpose - the opencast mines remained after the extraction of common minerals, mainly, in the area of large settlements: (1) deep sand, sand-gravel and gravel-pebble quarries, and (2) swampy, flooded peat quarries and drainage ditches. It should be selected evribionts and limnophilic (lake) fish species without a long migration in a life cycle, suitable for this type of fish farming. These species can be subdivided into three main categories: commercially valuable species, species for recreational fishing, and for agriculture.