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. 2016 May 17;4:e2035. doi: 10.7717/peerj.2035

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©2016 Thomas and MacDonald

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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All 14 body postures identified in this population of M. pfefferi in their home aquarium. Dorsal-view images are screenshots from 1-s clips used for analysis in this study. Lateral-view images are for descriptive purposes only and were not included in our formal analysis. (A) Elephant-ear and Flattened body; (B) Raised head; (C) Split arms; (D) Drooping arms; (E) Four arms raised; (F) Wide bottom arms; (G) Elongate; (H) All arms up and out (Circle); (I) Spike arms (J) Hovering arms (K) Two arms raised (L) Concentric arms (top) Wide-splayed arms (bottom).