I've found out that I may be getting a 70 litre tank soon, which will be my first ever fish tank! I have a lot of questions but the biggest question is: what fish can I get, and how many? My mother doesn't really want a tank with a heater so the fish will have to be able to survive without one. I've heard certain danios are pretty tough and can also survive a fishless cycle (I seriously doubt I can be patient enough to wait out a 3-6 week cycle with no fish, not unless I have to!) and I'm also interested in things like corydoras, tetras, and other interesting fish, but as I likely won't be able to get a heater, my choices are pretty limited. My house is quite drafty but it goes from being quite cold in the winter/spring to quite hot in the summer. Of course it's the UK so it never goes anything above a certain temperature and I do have a fan I could possibly use to help cool the tank down if it got too hot in my room. Something else is, what's better - fake plants or real plants? I'm scared that I'll have to do too many water changes with the real plants or I could potentially introduce some plants with parasites/diseases and it might stress me out too much. But then fish do prefer real plants and fake plants don't help with the oxygen levels like real plants do.