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Fig. 2. Representative images, with streamlines and contours of fluid speed in the
fish's frame of reference at the time of maximum gape for a low ram case (A;
RS/AFSaperture=0%), a medium ram case (B;
RS/AFSaperture=6%), and a high ram case (C;
RS/AFSaperture=14%). Note that the streamlines do
not indicate the area of water ingested, but rather the instantaneous
direction of movement of water at each location in space.