(A) Relationship between body rotation angle and head angle of Kármán gaiting fish. Head angle decreased linearly with body angle (y=−0.48x, r2=0.44, P<0.05, N=8). (B) Relationship between lateral acceleration and head angle of Kármán gaiting fish. Head angle also decreased linearly with lateral acceleration (y=−0.34x, r2=0.55, P<0.05, N=8).