These are just some of the fishes whose fluorescent glow was exposed by David Gruber, his colleagues, and some fancy filtering on their cameras. Click here for the PLOS ONE article. A: swell shark, B: ray, C: sole, D: flathead, E: lizardfish, F: frogfish, G: false stonefish, H: false moray eel, I: false moray eel, J: pipefish, K: sand stargazer, L: goby, M: goby, N: surgeonfish, O: threadfin bream. CC BY 4.0, Copyright: © 2014 Sparks et al.