Hi, sorry, this is my first time here, so hopefully I'm posting in the right spot. To make a long story shorter, I purchased some Buenos Aires tetras a few months ago and made the mistake of trusting what I was told, which is that they only need a 10 gallon tank. I have a 15, but it is pretty clearly not enough for these beautiful fish. I will do my homework in the future. In the meantime, I've been trying to help, and have lost four of them from stress nipping and bullying by the largest fish. He's the only one left. I don't want to get more of these tetras now, since I don't think they are a good fit for my smaller aquarium, but I also don't want to leave him in there alone. I would like to either re-home him or find a some alternative fishes that he could live with. Any advice would be appreciated.