Most of the smaller fish you can bag with 1.5-2 inches of water and the rest with normal air that will be in the bag and be fine for 2-3 days. Please double bag the loaches and check their bag periodically throughout the trip. Clown loaches have pointy spines under their eyes that will easily puncture a bag.
You could also use the sterilite plastic totes for the fish. Get 2 or three of em and put them with 4-5 inches of water and pop a lid on them and drive.
Dino and I have personally done 9 hour drives with fish in totes and been fine. We have also left fish in the fish bags as mentioned above, for 2-3 days without problem, but it is safer to do 1-2 days and either open the bag to reoxygenate the air inside, or rebag the fish.