During quarantine my 1st S.pulchra appeared night active, and sleeping during the day. The further 3 juveniles ones also swam very active at night, so most pic's are with "focus-guessed". Once, one youngster took getting flashed as a game and knew at which plantleaf I was waiting with prefocused camera, we were playing catch me at the plant. She (he?) was very inventive of movements to take turns on the last moment, but left me some opportiunity to take pic's, so I don't loose interest in the game ... that was my serious impression, they need respectful entertainment , I know, I caught that one special loach-virus

(yes, I am the one turning the camera around showing the pic's to them right after, so they get the idea what I am doing, ... kind of... but the look very interested, either way, they seem to enjoy the attention they get).
Now in the community tank they have not enough quietness to sleep during the day. Unless they hide in their holes, and the do love/need their nests.
Behaviour wise mine are more "clowns" than our actual
clowns.
The younger ones, in the meantime, pose looking out of holes for pic's and are doing good eyecontact but are more shy than other loaches. They would not come to handfeeding, while many other loaches do (clowns took 5 years to start eating from surface, the clowns I had during my youth were the first ones at the surface, sucking their food in with smacking (clicking) noise).