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This paper presents the mean wholesale price of commercial fish and the mean price of stocking material used in 2009 by fisheries enterprises operating in the waters of fishing districts comprising lakes, rivers, and dam reservoirs. These prices were calculated based on information obtained from questionnaires completed by 57 enterprises operating in 276795 ha of fishing district waters. These were then compared with the mean prices of commercial fish and stocking material from 2007. The results provide important information regarding current prices for fish and stocking material for management and practical purposes. They also reveal that there are substantial differences in prices for individual fish species/types of fish, as well as for given forms of the stocking material of various fish species. Comparing recent prices with those of 2007 indicates that the prices of commercial fish increased insignificantly while those of stocking material were more pronounced. The increases and/or decreases in the prices of commercial fish did not generally exceed 9%; only in the case of four species/types (including the smelt and small non-commercial fish comprising species/types that are of marginal importance) did price fluctuations exceed 20%. The greatest price decrease was noted for vendace and silver carp; however, in neither instance did this exceed 6%. Of the 34 forms of stocking material studied, price increases were noted for 21 while price decreases were noted for 13 forms. In extreme instances, prices increased as much as 200% (vendace summer fry), and decreased as much as over 30% (European wels autumn fry). The most important and most frequently used forms of stocking material of the most important species stocked in fishing districts did not increase in price by more than 10%, while decreases were of about 7% (with the exception of the prices for pike fry and 1+ crucian carp).
The aim of the project was to collect and analyze data regarding European eel stocking in Polish inland waters in 2012. Sixty-seven fisheries enterprises that exploited 295,457 ha of waters, including 82,532 ha of waters in the Oder River drainage basin, and 212,925 ha of waters in the Vistula River drainage basin, were surveyed. The number of reared eel released into these waters was 3.4 indiv. ha'1. The mean individual weight of this material was 23 g, the value was 7.96 PLN ha'1., and 83 % of the water surface areas surveyed were stocked. The types of eel stocking material obtained from importers or producers released into these waters comprised 18,799 kg (1,747,433 indiv.) eel fry, of which 9,465 kg (1,559,700 indiv.) were of a unit weight of up to 10 g.
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