Brian Wisenden, Biosciences Department, published a paper in the Journal of Animal Ecology entitled “Evidence of incipient alarm signalling in fish” (see https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.13062). The editorial board of JAE invites “In Focus” articles such as this one to highlight a particularly impactful paper (Bairos-Novak et al. 2019). Wisenden was chosen to author the In Focus because his chapter on “The cue-signal continuum: an evolutionary trajectory for semiochemicals in fishes” in “Fish Pheromones and Related Cues” (Sorensen & Wisenden 2015; Wiley-Blackwell Publ) set the stage for the Bairos-Novak et al. (2019) research.