Hi, I was given a 29G(US) tank with everything included. It has been a month and the tank is doing great. My problem is that I was also given 1 Cherry Barb, 1 Neon Tetra and a Bristlenose Pleco. I put in 5 Harlequin Rasbora this week and all seem to be doing fine. My problem is that I don't want to get more Barbs or Tetras and I know these fish should be in schools. Should I try to find them new homes or just let them live out their days in the tank? They seem lively and healthy.