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Old 09-07-2011, 05:15 PM   #1
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Breeding Mollies

I have 4 mollies, one dalmation, one black lyretail, one yellow, and one yellow sailfin (i think) i think the female yellow molly is pregnant is it common behaviour for the male ( sailfin ) to nip at her pectoral fins, chase her and for his dorsak fin stick up and fan out ?
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Old 09-07-2011, 05:53 PM   #2
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I believe it is common behavior. Do you only have one male? Males can stress out female mollies if there aren't that many females.
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Old 09-07-2011, 05:55 PM   #3
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The fin that will be sticking out towards her is a modified dorsal fin known as a gonopodium, which most livebearers have evolved. He will bump alongside her (nip at her pectorals) while moving this to breed with her. So yeh, sounds like they are breeding!
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Old 09-07-2011, 05:56 PM   #4
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I meant modified anal fin.
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