Finally! After three spawns from these Corys and not one hatching, I found just a few in the hatching tank; probably no more than half a dozen, but it's a start. During water changes yesterday morning I found a few youngsters in the adult's tank that look to be about 4 or 5 weeks old, so I must have missed a spawning at that time. Apologies for the bad picture, but the young catfish are very active and it's hard to find one sitting still long enough to get a shot.
Were there at least 10 fry surviving from this spawn after 30 days?