Robuta

https://www.mdpi.com/2073-8994/15/4/811 Adaptability of Bony Armor Elements of the Threespine Stickleback Gasterosteus aculeatus... Differentiation in the defensive armor of the threespine stickleback, Gasterosteus aculeatus, is caused by predator-driven divergent selection. Most studies... threespine sticklebackadaptabilitybonyarmorelements https://www.fredhutch.org/en/news/center-news/2008/05/threespine-stickleback-fish.html Researchers document rapid, dramatic 'reverse evolution' in the threespine stickleback fish - Fred... May 19, 2008 - Evolution is supposed to inch forward over eons, but in the case of the little threespine stickleback fish, the process can go in relative warp-speed reverse,... reverse evolution