Drucker and Lauder suggested that the dorsal and anal fin wake could generate
increased thrust at the tail if the tail encounters flow
altered to increase leading edge suction by modification of boundary layer flow at the appropriate time.
Aktar and colleagues[75], in a computational fluid dynamic analysis using the dorsal fin and tail kinematics
from the Drucker and Lauder[62] study, showed just
such a substantial thrust enhancement when the tail
moves through the wake of the dorsal fin.