That sounds horrible
I was really worried about fish on fish violence when I picked mine out just because I wanted to avoid that.
Right now I have a weather loach who is doing really well, and seven rosy minnows. The loach I got on purpose, mainly because he looked really cool and and my research showed that he would be a good match for my tank, which was empty before that. Really big, I don't know how many gallons because it doesn't have an info tag on it and I am horrible at eyeballing measurements, but it's quite big. It covers the whole top of my dresser and is taller than one of my forearms. I tried out real plants but that did not work out so I switched to a bunch of fake ones that the fish still seem to like for cover.
The rosy minnows were not an intended addition, but I'm still cool with them and they haven't had problems with my loach. Basically my sister was regularly buying feeder minnows for one of her snakes, who ate fish, but he passed away. It wasn't really that unexpected because he was a super old snake, but it was still pretty sad. And my sister had a few minnows in her room and no snake to feed them to. So she asked if I wanted them and my tank was basically just this huge space with one loach and some plants and little caves and stuff so I said okay and now I've had the minnows in there since...shortly before the pandemic? So about two years now?
Originally there were about ten, but some of them have died. I think their projected lifespan is 2-4 years and my sister did get them from a big feeder tank at the local petstore so I never expected them to live, like, a super long time. I'm pleasantly surprised that the majority are doing so well.Once they've all died I don't know what I'll put in my tank. I'll have to figure out what loaches enjoy for company I guess, haha.