I'd say hit or miss on tropheus, I have species and a community troph tank. Surprisingly my comm. Tank has produced more fry than the species,and all females have carried all broods full term. Its an animal so unpredictable. My story is low stress on the holder I guess, or luck. My species tank which is mboko orange moorii is the tank where the holders ate first broods. Just monitor daily and do what you see and feel is best for the fish and fry.