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♦ ¹Seasonal feeding activity and ontogenetic dietary shifts in crucian carp, Carassius carassius, Olli-Pekka Penttinen & Ismo J. Holopainen, Environmental Biology of Fishes 33: 215-221, 1992.
♦ ²Feeding differences among common littoral mysids, Neomysis integer, Praunus flexuosus and P. inermis, Maiju Lehtiniemi, Hanna Nordström, Hydrobiologia (2008) 614:309–320