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That's correct, mollies do bear live young. Though on rare occasions, they do, for whatever reason, "abort" their pregnancies.

Just this evening a heavily pregnant black molly of mine produced about a dozen bright orange eggs, and three fry. One of the fry is seriously underdeveloped and wont make it, I'm certain. The babies have been having a feast on the leftover eggs, so there must be a reason for this behaviour. It may be an instinctive response, as my mollies live in a large tank with some large fish. It could be that my molly has exhausted her supply of sperm, and only fertilised the eggs she could. There are any number of reasons.

It is a shock seeing eggs appear, where usually the explosive darting fry greet one at a molly pregnancy, but it does happen!

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13y ago

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