Study: Archerfish can learn to discriminate a large number of human faces, demonstrating that they have impressive pattern discrimination abilities, and providing evidence that a vertebrate lacking a neocortex can do so to a high degree of accuracy. User b12ftw, in the Fish cognition and behaviour subreddit, 16 Dec 2020
Discrimination of human faces by archerfish (Toxotes chatareus) User The_Ebb_and_Flow, in the Animal Intelligence subreddit, 14 Jul 2018
Discrimination of human faces by archerfish User Lilywen, in the Reddit Science subreddit, 09 Jun 2016