Yes, actually very nice looking for just yellow and active, like you said. I spent hrs. watching it the first evening, looking for sand. Trying to bury on my blue glass bottom.
I have a couple tupperware containers of sand in there for it but was scared of them. Kept swimming by and looking, then would try everywhere on the glass again.
Finally hovered over one for a long time eyeing it up. Even went down and layed on it for a sec...
...Then finally snuck up and gone into the sand. What a laugh.