Abstract Mechanisticapproachestoplanktonfood-websoftenrelyonsize-basedmodels.Thesemodelsdescribe predator–preyrelationshipsbasedonpredator body or cell size. However, size-based representations of trophic relationships fail to encompass the diverse feeding behavior dinoflagellates, which play an essential role in food-web due their abundance and ubiquity. Here, we introduce specialization facto...