Mine hide most of the day unless there is something that interests them like food. But they come out when all the lights are out in the tank. I also put piece of
driftwood in there for them that has holes in it like crazy and I put in 2 clay pots for them and my corys to hide in incase they get tired from playing and want to rest(the corys I mean). When the loaches come out, they are very energetic and zoom from corner to corner looking for food. It is really neat to watch them try and find a hiding place in the morning when the lights go on. But now I leave the lights off until the room they are in is full of natural light so I don't disturb them when they are looking for food. Sorry for the long reply and sorry it is a little later than you probably expected but it's better late than never.
Tom