Okay this is weird, I just bought some clown loaches too, lol.
I got 3 last weekend, and I was happy with them. I got them to eat but they weren't very keen on venturing out of their cave while I was in the room. So this weekend I bought 4 more, and now at least 5 of them are out all the time, and when I feed them, all 7 come out.
They really like the high water flow in the back of the tank. Several of them will swim in the current together and then dog pile in a corner. It's funny to see them swimming so vigorously and then just relax their bodies and let the flow take them.
Good luck with your fish,
Serg