Do I risk it?

For anyone who has never been in my apartment in person, you should first know that we have a fishtank in our living room that currently has nothing living in it. We used to have two newts (RIP Rodd+Todd), but they died and we have not replaced them with anything since. Sometimes it freaks people out because they wonder what kind of creature is in there and where it's hiding. That part is fairly satisfying for me as the owner.

The point is, I've been thinking about getting some angel fish ever since I saw the two new ones that my mama put in her gigantic tank. The only problem is that Chris has not been agreeable to this. Why? Because he says I have too much of a tendancy to kill things. This is not untrue. Plants, fish, newts, etc. To be fair I do still have some plants that I have not killed yet though. I just find that things get tricky sometimes... I certainly put in the effort... but things happen. I over-water... over-feed... don't make the tank secure so the damn things can not escape, you know... the usual... I just find that pets like cats are easier to care for. It's easier to see when they are sick or hungry/not hungry. Anyway, all this has not deterred me from wanting some new fishies... will have to work on boyfriend some more, I guess.

Does anyone have any suggestions or tips for me on caring for fishies? I could probably use some...!