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. 2017 Jul 3;372(1727):20160233. doi: 10.1098/rstb.2016.0233

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© 2017 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Four potential mechanisms of within-school sorting. (a) At fast swimming speeds, fish with low AS (blue individuals) tend to occupy positions at the back of the school, while fish with high AS (black individuals) are in the front [17]. (b) In small schools of golden grey mullet (L. aurata), fish in the back and near the edge of the school (blue individuals) tend to be the last ones to show an escape response to a threat, while fish in the front and centre (black individuals) tend to be the first to react [84]. (c) Fish with low RMR (blue individuals) tend to be the first ones to swim to the surface and perform ASR [85]. (d) Fish that are left- (blue individuals) or right-lateralized (orange individuals) occupy positions on the right or left of the school, respectively. Non-lateralized fish (black individuals) tend to stay in the centre of the school (largely based on [86]).