Hello to all, the title sounds cruel, doesn't it? I have cory catfish in a thirty gallon tank, and I have a breeder, and I have a male(s) who fertilize the eggs. I'm told the fertility of a breeder is approximately 8 - 10 years. I've had this fish for ten years now, and she has been breeding for probably six or seven of those years. The surviving babies I give to a fish store thank goodness, but I have had enough. She lays eggs at the least every month, and I am no longer interested in raising these babies. I was never interested in raising baby fish, but felt the obligation, I am not about to flush them. I was thinking when the eggs are first laid, if I scrap them off the glass or move them will that stop the embryo from forming? As bad as I want to stop this, I can't get rid of the breeder or put her into another tank, one tank is plenty for me, and I can't just toss the eggs in the garbage. Without using chemicals, does anyone know of a 'moral' way to kill fish eggs.