Chapatrap said
So, Nautolans are amphibious, I get that. But are they fresh watered or salt watered?
It's not specified, but I'd assume most of the water on Glee Anselm (their homeworld) would be saltwater. Their name is derived from nautiloids, which can only survive in saltwater... but the Nautolans appear to be the most resilient of the amphibians we see in Star Wars given the degree to which they endure non-aquatic environments without assistance (more so if we factor in Kit Fisto's appearances from the Clone Wars movie and TV series).
So I'd assume they're at home in saltwater but able to tolerate freshwater in the same way that they tolerate being in no water at all.