Well, I ended up keeping them because they seemed fine. They were fine for the past 6 months but now the female is swimming up and down the glass again for the past couple days so I guess I'll try to rehome the pair again.
Due to the virus I will be maintaining social distancing so you won't be able to come in and see them beforehand but I'm happy to take all the photos and video you like. You will pay via PayPal and call me once you're here then I will bag up the fish and put them out on the stoop for you to pick up.