Will my molly ever give birth?

Jul 20, 2011
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#1
I've had a molly that looks like it is going to explode for about 2 months now and i'm starting to get worried that maybe since i rearranged the tank while she was hiding that somehow she held the babies in and now are dead inside of her.. Is that possible? Any info on this at all would be much appreciated
 

Feb 27, 2009
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#4
ive had a Female Zebra Danio stay pregnant til she died 2 years later. My mother had a Zebra danio that did the same. I found it VERY odd.
Fishman1995, danios do not get pregnant. She may have been carrying eggs (unfertilzed eggs are layed and then fertilzed by a male), but most danios lay eggs constantly (and regrow more) throughout their lives, provided they are cared for properly. A healthy female danio will always look a bit chubby.
 

May 8, 2011
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#5
Yes that is very odd. I have nice male and female orange mollys in my tank i did not even realize that she was pregnant until she gave birth. and now she is pregnant again. im not sure about holding the babies in side of here i have be told once or twice that if they get stressed during pregnancy they will hold the babies is.
 

May 4, 2011
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#8
Normal gestation period is 25-28 days. Are you sure she's pregnant?
Not for mollies they are more like 45 days. I hear your first drop takes longer and they can hold fry for a while, they do not necessarily kill the fry this way. My guppy female held fry for almost 2 1/2 months before birthing and my molly female has been pregnant around 70 days and still waiting for the fry to come. Is she being housed with a male? The male could be harassing her by trying to mate constantly and that could stress her into holding or miscarraige.

Offer her more hiding spots, maybe a little salt if your other fish can tolerate it and remove her from any males or even females if they are nipping and be patient. She could be totally fine and just taking her time on the first drop with you.

My female guppy was in a 40 gallon with 2 cory cats for around 6-8 weeks before she dropped, my molly has been with the guppy and corys for over 4 weeks (after spending a few with a male) and still has not dropped.

Just to touch on the other comment, gravid does mean "heavy with eggs" so the gravid spot is more an indicator of eggs than fry, with mollies you may actually see fry's eyes inside her belly when she is about to go and females do plump a little when gravid. However if she shared a tank with a male, she is pregnant most likely.
 

May 4, 2011
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Ohio
#11
I bred mollies in college during an ecology class. Ours had fry like clockwork ever 26-28 days. There was little difference in the size of the fry or number of fry if the females were bred once and then kept without males, or kept constantly with males.
Neat, I wonder why my first female did not breed like that. I wonder if it varies by species of molly? My silver molly birthed after I got her and she did not look big at all, but my orange has gotten big and won't birth. Maybe I can do fish lamaze and cheer her on? I wonder if you took better care of your molly in college than I did mine, I try to feed them balanced but I have heard some foods are better for eggs and fry than others, could speed up the process?

I know guppy cycle is about 28 days but my first from my black phantom took almost 10 weeks. Curious if I am delaying them somehow or if they just don't want to be moms.