Collective behaviour of the European minnow (Phoxinus phoxinus) is influenced by signals of differing acoustic complexity Author links Helen A.L.CurrieaPaul R.WhitebTimothy G.LeightonbPaul S.Kempa Behavioural Processes Available online 7 May 2021, 104416 https://doi.org/10.1016/j.beproc.2021.104416 Highlights • We tested how acoustic complexity affects group behaviour of socially shoaling fish. • Fish startled, and altered group swimming speed in …