They're about the same as zebra loaches.
Their activity level will depend on how large a group they're in, and how comfortable they feel. On the whole though, they tend towards shy like most botia.
I have 4 (with 5 zebras, an older yoyo loach, bristlenoses, an old otto, and rainbowfish). The largest one is very shy, and I see him rarely. The other three are more active and do swim around the tank, although not constantly.