Trnski, LSabetian, ALilkendey, J2020-09-072020-09-0720202020Journal of Fish Biology, Retrieved from: http://dx.doi.org/10.1111/jfb.144920022-11121095-8649https://hdl.handle.net/10292/13639Behaviours of Clark's anemonefish Amphiprion clarkii and the dusky anemonefish Amphiprion melanopus were studied in Vanuatu. Six anemones and their resident fish were observed for typical behaviours (hiding, watching, roaming, inter-, and intraspecific behaviour) with and without the presence of a snorkelling observer. Observer presence had significant but contrasting effects on hiding behaviour in A. clarkii and A. melanopus. Bolder anemonefish species may be able to outcompete other species in areas with high human presence.© 2020 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.Anemonefish; Behaviour; Boldness; Observer effect; VanuatuJournal ArticleOpenAccess10.1111/jfb.14492