I breed Jack Dempsey's & there are many levels of difficulty in breeding. You have to be more specific in your question.
Jack Dempsey's in General would be in the (MEDIUM Difficulty) to breed & that's only the Wild Type Jack Dempsey's. But the difficulty increases with different types of JD's that require recessive genes.
Look in the breeding section in this forum & you'll see open threads with JD's.
I was lucky mine laid eggs yesterday and I've only had the male for a week.I did nothing to encourage them.I wish they would of waited another couple of weeks to do it.