What does aliens need to survive on Jupiter?

If you only asked me what does an animal need to survive in my house,

I couldn't answer that one either, until you tell me what animal you're

talking about.

Now you want to talk about aliens, of which #1) : We have no evidence

that they even exist, and #2) : If they do exist, we have no idea what kind

of a planet they live on, and #3) : We have no idea what the environment

might be like on that planet.

So, to answer your question, I would say this:

In order to survive on Jupiter, an alien species would need exactly the

same things that Earthly humans would need there ... They would need

some set of materials and devices that could be used to duplicate the

conditions of atmosphere, temperature, pressure, gravitation, and

radiation in which their species evolved and to which it adapted, in

whatever place they came from.

I dont believe that there is aliens so they need nothing to survive because they arent real. But that is my opinion. Scientist say they are but in my belief i think they just saying that to get known.