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. 2016 Oct;13(123):20160734. doi: 10.1098/rsif.2016.0734

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© 2016 The Author(s)

Published by the Royal Society. All rights reserved.

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Figure 2. — (a) Averaged beating frequency, f, and amplitude, A, (inset) for both top and bottom fish as a function of the swimming velocity averaged over the seven pairs studied. As can be seen here, fish frequencies are very close to each other and evolve linearly with U. L is the fish body length. (b) Strouhal number and phase velocity v_ϕ (inset) as a function of the swimming speed U. (c) Typical lengths l and d defining the swimming pattern of a tandem of individuals as a function of the swimming speed. Again, the values are averaged over the seven pairs studied. The results show a constant value for both lengths, setting in average, a single spatial ordering for the tandem.

Inline graphic — (a) Averaged beating frequency, f, and amplitude, A, (inset) for both top and bottom fish as a function of the swimming velocity averaged over the seven pairs studied. As can be seen here, fish frequencies are very close to each other and evolve linearly with U. L is the fish body length. (b) Strouhal number and phase velocity v_ϕ (inset) as a function of the swimming speed U. (c) Typical lengths l and d defining the swimming pattern of a tandem of individuals as a function of the swimming speed. Again, the values are averaged over the seven pairs studied. The results show a constant value for both lengths, setting in average, a single spatial ordering for the tandem.