[Pavel Chaloupka]

Not being a paro expert yet I still would not blame the male first. Him eating eggs is much more likely to be for a reason than him being an egg eater. If it is a young pair of fish poor fertilization could be a problem as with a lot of other species and even if is not, environmental conditions like pH, humic substances or temperature could be wrong. What is suficient for other Paros at your stock does not have to be enough for your new fish.