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Old 01-05-2013, 03:00 PM   #1
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Exclamation Male Molly Fry

My 3 month old black molly fry has been forming his gonopodium for about a week now. He's only about an inch and a half now and has become a little sex-crazed monster. He keeps trying to mate with his pregnant mother. I know that mollies and all live-bearers will readily mate with siblings and relatives but does anyone know if I should separate him to prevent inbreeding or leave him be. It would happen in nature. Just need someone else's input.


P.S.- I also have a runt in my one month old litter that is about a centimeter in length do you think he would get eaten by my Three and a half inch Silver Sailfin Molly male?
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Old 01-05-2013, 03:10 PM   #2
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What is you tank size and what and how many fish do you have?
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Old 01-05-2013, 03:18 PM   #3
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The pregnant molly and four fry are in a 10 gallon heated tank
In my 15 gallon i have two male platys, 1 male molly and four chinese algae eaters the pregnant mother lives in the 15 gallon too but is in the ten gallon for birth.
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Old 01-05-2013, 03:20 PM   #4
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I don't know the answer to the first question, but in regards to the second one: if the baby fish is able to fit into any others mouth, it will get eaten.. I don't let mine out until they are bigger than all the other mouths hope that helps
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Old 01-05-2013, 03:32 PM   #5
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I wouldn't worry too much about the babies, let them do what they gotta do hahah. On a sidenote, a chinese algae eater can get 8 inches or more, in the future they have no right to be in a 15 gallon. Good luck with the fry, I would make sure there is dense plantage and hiding spots in the fry tank.
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Old 01-05-2013, 04:40 PM   #6
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Ok thanks for the info. about the chinese algae eaters I didn't know at the time because my lfs gave them to me for free when i got my mollies (which were sick) 2 months ago. I've researched them and tried to take them back but no one would take them, but they havn't done anything wrong in my tank
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Old 01-05-2013, 04:52 PM   #7
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Yes they are quite helpful, they will just get to big. Good luck!
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Old 01-05-2013, 05:47 PM   #8
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Quote:
Originally Posted by jairic View Post
My 3 month old black molly fry has been forming his gonopodium for about a week now. He's only about an inch and a half now and has become a little sex-crazed monster. He keeps trying to mate with his pregnant mother. I know that mollies and all live-bearers will readily mate with siblings and relatives but does anyone know if I should separate him to prevent inbreeding or leave him be. It would happen in nature. Just need someone else's input.


P.S.- I also have a runt in my one month old litter that is about a centimeter in length do you think he would get eaten by my Three and a half inch Silver Sailfin Molly male?
Hi, there's three things you can do about inbreeding;
1. Separate them
2. Sell or trade them
3. Just keep only male or only females but remember that females can store sperm for up to 6 months, and give birth every month.
My 3 month old platy had fry with her brother I didn't think it was possible at that age, although i know now!!..Although i'm sure in nature inbreeding does happen, it is alot less likely than in your aquarium..
Also i doubt your 'runt' would get eaten as he wouldn't fit in the Sailfins mouth!!!..
Hope this helps...Ian
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Old 01-06-2013, 01:27 PM   #9
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Thanks for all of the good advice.
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