Balloon Belly Molly breeding - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 5 Old 02-08-2008, 09:50 AM Thread Starter
Balloon Belly Molly breeding

Ok, I have a couple of questions. I have 8 balloon belly mollys in a tank. 7 of them are adolescents, and 1 is an adult. I have witnessed one of the adolescent males breeding with 3 of the other female mollys, one being the adult! will something go wrong if a molly breeds with a molly that is significantly older? Also, can mollys breed with their family members? Last, how long will it take for them to have babies once they get pregnant? Sorry for asking so many questions :D .

I have a 15 gallon tank full of balloon belly mollies. I love fish, and hope to become a marine biologist
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post #2 of 5 Old 02-08-2008, 04:28 PM
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ok well first off Congrats! it will be so fun having babies!

ok now for the questions. its ok if 2 different age fish breed. nothing will happen to the fry. and second yes they will breed with their own family. this happened with my guppies. it wont cause a problem in the first few generations but im not sure if after 4-5 generations of interbreeding if something will go wrong. so just try to mix up your stock every now and then im not sure exactly how long it will take for the babies to come but once you can see the "gravid" spot on the female its getting close. i hope you have a great time with your new babies!

oh and make sure that you seperate the pregnant female from the rest when she starts to give birth. once she is done take her away from the babies or she'll eat them.
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post #3 of 5 Old 02-08-2008, 04:48 PM
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Are you planning on separating the babies so that they all survive? You can leave them in the tank, and only a few will survive, or you can put them in a breeders net so that they cannot get eaten. If you plant the tank heavily more of the fry will survive. Also, breeders nets/traps can be stressful for the mother, and can cause the birth to go wrong. Breeders nets/traps also don't allow as much water circulation, so if the fry are growing up in there you'll have to clean it a lot more often. I'd recommend just letting the molly give birth normally in the tank, and putting in a bunch of plants, so that the fry can hide. It means your population won't grow too large, but some of the fry will survive.

Also, don't be worried if you don't see many/any fry from the first few pregnancies. Young fish can have very small pregnancies in the beginning, but you'll have bunches of them in no time!
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post #4 of 5 Old 02-08-2008, 05:06 PM Thread Starter
First off, thank you so much! Second, I've had babie mollies before, but the moms were both pregnant when I bought them. I do seperate them in a breeding thingy. Thanks again!

I have a 15 gallon tank full of balloon belly mollies. I love fish, and hope to become a marine biologist
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post #5 of 5 Old 02-10-2008, 10:51 AM
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i would put them in a breeding net when it looks like they will give birth any second. you dont want to keep them in there any longer then you need to. and if you dont want to have to clean the breeding trap while they fry grow in it then just move them to an actual net. this way they get fresh water and you only have to clean it when the fry are old enough to get out of it. thats what i do with mine. it works really well.
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