If humans just completely disappeared one day, what might happen to the animals in an aquarium?
Obviously, some might starve and others might feel the effects of the climate/climate change, but what other things might be overlooked when talking about an aquarium in a post-human world? Like, do some needed lights to stay on? In some aquariums I notice air gets filtered in, is that necessary to keep them alive? If someone was able to feed them, what else would they need to know to keep them alive?
Really any information on an aquarium in a post-apocalyptic (without zombies) world would help!