HOLY firing synapses Batman!!
First the Kiwis discovered that trout have memories and now a bunch of boffins at Oxford have figured out that some fish can remember what YOU look like. Head guide Mississippi Johnson is in real trouble from those brown trout if the salmo trutta are as smart as tropical archerfish, which could pick out familiar faces in the study.
I stumbled across this gem in Moldy Chum though the Oxford study was originally published in Nature’s Scientific Reports.