Lara Ferry talks to Lillian Tuttle, an early career researcher shortlisted for the 2021 Haldane Prize, about how a small-yet-mighty fish, the cleaner goby, may be relatively immune to lionfish predation for an unexpected reason. Read the research here: https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2435.13806