I lost my red wag platy a few days ago, and her tankmates seemed a bit "off", following her death. One of them (the one who had been there with her the longest) seemed especially affected by this; she started being really distant and spent most of the time hiding in the corner of the tank. Meanwhile, my other two platies began to act a bit aggressive towards each other, which isn't like them at all.
When I saw them this morning, their odd behavior had stopped, and they're now behaving normally. But all of this made me wonder as to whether or not their behavior was tied to the death of my red wag platy.