The males are amazing Dads. They take good care of the young right until they can swim. Then the Ancistrus swim out with large yolk sacs still attached, and become a delicacy for many tankmates. I may be wrong, but in general, with Mikrogeophagus altispinosus in there, 20 could survive from every spawning of fifty.
I'm reconciled to mine. They may be unnatural, linebred fish, but they grow on you. I'd rather have wild forms, but I don't, and these are genial fish. I was given them by a kid who needed to rehome them originally, days before the pandemic hit and rehoming became difficult. So here they are, generations later.