Only floating microscopic organisms could life there because the planted doesn’t have a solid surface for life to develop. The free floating organisms would only be able to exist at the top of the clouds since the atmospheric pressure is more intense than Earths. The free floating organisms would have to be resistant to solar radiation though because the atmosphere is chaotic. Lastly the gravitational compression has heated areas close to the core over 18,000 degree Fahrenheit. With the information today that we have on Jupiter it cannot support life.
Europa one of Jupiter’s moons is one of the best bets for supporting life. Europa might have an icy crust but below it there’s a liquid ocean that has more water than Earth. There is a possibility that beneath Europa’s surface there are actives volcanoes that heat the water there for providing vents were bacteria may live. Does have high radiation levels but the ocean is also shielded from radiation. Europa has water, energy, and organic chemicals which are the key for