hi I have a pair exactly like that the trick is to feed the male and keep him distracted (try and feed time at least five times in that day before breeding) until there is a reasonable amount of eggs on the cone or plant. he my nip at them a few times but he should realize what to do and after a few hours of them fertilizing the eggs. put wire mesh around the eggs. the mesh should be a few mms from the eggs just enough space for them to still be able to fan the eggs