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Molly Fish: After Male Inserts Sperm, How Long Until Black Pregnancy D

Discussion in 'Livebearers' started by JosephTheFishExpert, Jul 23, 2014.

  1. JosephTheFishExpert

    JosephTheFishExpert New Member

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    Hi, I am Joseph... I was just wondering how long after sperm was inserted into the female, does the female show that she is pregnant or in other words the "black dot" appears in front of her "anal fin?"
     
  2. Mamashack

    Mamashack Member

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    It's called a gravid spot altho the presence of a gravid spot doesn't necessarily denote pregnancy. In some fish it merely shows the fish is mature enough to breed.
    The best sign of fry developing is a swelling belly over a period of a few weeks from mating.
     
  3. attibones

    attibones Member

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    I usually just assume all females are pregnant. You can buy them pregnant usually. They hold sperm for a long time. After one batch of fry another one may be ready to brew. I assume pregnant until proven otherwise, actually. :)
     

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