Bartel R., 1985. Effectiveness of stocking tagged rainbow trout (Salmo gairdneri Rich.) into the Baltic Sea. Acta Ichthyol. Piscat. 15 (Suppl.): 65-85.

From among 40505 tagged rainbow trout, released at the age of 0+, 1 and 2 years into the Baltic Sea, the Vistula River and some Pomeranian rivers, 0.0 to 14.7% of the tags were returned during the first 3-4 months after the release, and 0.1 to 20.9% later on. Effectiveness of stocking was calculated as kg of the catch per each 1000 released trout. It varied from 0.4 to 418 kg and depended on the time and place of release, fish age and size, growth rate, and intensity of exploitation. Share of Polish fishermen in rainbow trout catches varied from 30.8 to 100% and depended mostly on the place of fish release.