41 of the 44 corydoras eggs that I moved to the isolation tank hatched last night and this morning. I was able to witness about a half dozen of them hatch in front of my eyes: first, I could see the fry wriggling around inside the egg, and a few minutes later the egg would burst open rather suddenly and the fry would dart out, and upon gaining its bearings a second or so later it would immediately swim down to the safety of the gravel. In the gravel the fry are completely invisible except occasionally when they move about. When I got back home tonight I could still see that at least a few were still alive, though it’s impossible to know how many until they grow large enough to be more easily visible.