I was at the lfs earlier and I saw a gymnothorax tile not moving but just breathing upside down, I figured out that they had kept it in freshwater, and are mostly brackish/saltwater, I remembered keeping one before which led me to having a saltwater aquarium, thanks to this fish i got into the saltwater hobby, I felt bad for it and wanna try saving it, it's in pure freshwater so can I just dump him in the saltwater? I've heard that people usually just dump em in the saltwater, i have a quarantine tank set up for my new upcoming saltwater fish so I am gonna use that tank for him