Hey just bought a senegal for my aunt, now I have a problem!

Hey I have a 150 gallon saltwater tanka nd only bought this senegal for my aunt, however I couldn't head to her house today, plans got ruined. So this senegal has been sitting in the bag for about 9 hours, but I left the bag floating on my tank to make sure the temp of the water in the bag stays aroung 79-80. I know these fish are different from ordinary fish, will I be able to let him float in the bag overnight and get him to my aunt tomorrow or should I open the bag and somehow have him float to keep the temp warm in the bag?

If i do have to leave the bag open, will I have to find an air bubbler or since these fish if not mistaken breathe air I wouldn't need it? Im pretty sure I heard that they can breathe air

Ok so he doesn't need an air bubbler?

Ok awesome thanks! I was just going to open the bag, so the temp of the water in the bag stays warm, but it's best to use a bucket of water, however I don't have a spare heater he will be ok in room temp water?

room temp is 70-71

Right now I just opened the bag and have him sitting in one of those specimen containers, but the bigger size. Its 3/4 full of water. I could maybe find a container and put holes in the top and let it float in my sump to keep the water warm, if need be. Also should I use the water it came with a add him to fresh new water with dechlorianted