My loaches seem to fall asleep at about 9pm at night but wake up before the sun comes up. It's really funny to watch them sleep, like the other night I had some friends over to have a look at my new setup and one of the loaches was flat on his side on the bottom of the tank, as well as the other seemingly floating dead in the water tumbling through the bubbles from the filter! They really are characters when it comes to how they sleep. I learnt after the first few days if I can't find them at night I've just accepted they're hiding somewhere sneaky to sleep and I'll see them in the morning
