Brian Wisenden, Biosciences Department, published a paper in the Journal of Animal Ecology entitled “Evidence of incipient alarm signalling in fish” (see 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.