The Most Low Maintenance Pet?

I have a corn snake who is fairly low maintenance. She is actually living on campus in my science ed class right now, so I don't even see her everyday. After the initial set up, it's not hard at all. You have to get your temps correct, which was fairly cheap with a heat mat and a thermometer. I have her in a plastic tub, so that was cheap too. Actually, the first tub was cheaper than the new one I am moving her into tomorrow, which was $10, but should be good for life. She gets fed weekly and I have to make sure she has clean water. When she sheds, I do have to be sure that the shed is complete. However, my snake so far has been an excellent eater. I've heard some may not be as good eaters, and that can make it difficult. But, so far, she's been my most low maintenance pet other than the betta. 

Fine, go and tell someone that they need to clean their tank every week. Good thing you don't work at a pet store, because I can promise you they'd come back with a dead fish the day after they cleaned the tank for the first time.

Uhhh.... who said that? All I said was that brown water is pretty nasty. Fish eliminate in their water. Food rots in the water. It shouldn't turn brown before it's changed, because that's unhealthy. A proper filtration system would extend the time between water changes, and would not challenge the fish's swimming skills.

I've worked in a pet store, before, and probably will, again, before it's over with. People kill fish all the time. They kill hampsters, gerbils, rats, dogs, cats, monkeys, and chickens, too, I'm sure. Fish seem to be among the easiest to kill, because they're inexpensive and people don't do any research before they buy them, regardless of what they're told in a pet store.