Weather Loach

I got this fish tank but idk what can fit in it. I don't want any fish that needs a heater or anything I want a cold water fish or like room temperature. It just this tank is small, idk what to like get I live in Shrewsbury and I always go to Maidenhead aquatics, any help? It has already gravel on the ground, and a wallpaper at the back, so but the filter needs to be on so the water is cycled right? First I was thinking about a paradise fish, or like. A weather loach but they get too long and no swimming places so I can't. I just want to be happy with maybe like fish that are like, you know friendly and will come to you and stuff. See less

Fish swap These two babies are in a temporary tank as I have a new one set up. Will trade for, if possible: x1 10 cm bristlenose pleco x1 corydora x1 male golden dojo loach I cannot drive due to disabilities. Doncaster area. See less

N Anyone have weather loaches with their koi? My loaches keep swimming with my koi as attaching themselves almost. Is that normal?

I am looking to find somewhere that will take two dojo loaches and a gold fish (I think it is) for me. My dad had a pond and his wife has been keeping up with it since he passed away but she is now no longer able to take care of them as she has a terminal illness herself. Warwickshire