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Abstract
Twaite shad Alosa fallax (12–48 cm total length) from the Gulf of Gdansk feed on Mysids: Mysis mixta, Neomysis integer, and fish: Sprattus sprattus, Osmerus eperlanus, and Pomatoschistus sp.. In the stomachs of A. fallax there also occur Hydrobia sp., Diptera and small stones, particles of wood and plastic. The food of inshore twaite shad measured from 12 to 21 cm centered on M. mixta. Fish are the main prey for A. fallax from the class length 22–31 cm from the Vistula River mouth and for all shads longer than 32 cm.
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Details
1 Department of Migratory Fish, Inland Fisheries Institute in Olsztyn, ul. Synów Pułku 37, 80-298, Gdańsk, Poland
2 Department of Marine Biology and Ecology, Institute of Oceanography, University of Gdansk, al. Piłsudskiego 46, 81-378, Gdynia, Poland
3 Hel Marine Station, Institute of Oceanography, University of Gdansk, ul. Morska 2, 84-150, Hel, Poland