Donna, they do take a lot of patience since they are such slow growers. I got these in a group buy on this forum a long, long time ago. Seems like it's been forever.
DMD, not a clear picture, but this is probably what you mean? They are always doing this.
Madness, I used to have a D. compressiceps. They kind of remind me of calvus only much bigger. Very cool with a narrow compressed body and big mouth. You should like them too.
I wish I had a way to make these calvus grow faster and you could take some. They are the white chaitika.
In this picture, you can see the fry on the rock. Adults don't seem to care.
I still hold my breath every time I go check on them; afraid that they will start dying for some reason.