Unfortunately mine do not sit still. Here is my recently-acquired male C. regani cruising around the tank. He was waiting on me to feed him. Maybe he'd sit still if he were full!
These are my brand new pair of C.regani's.
This was the day after I got them.
They are only about 2 inches long.
I had and was able to breed some a few years ago.
I am glad I have them again. They are more like pets than fish.