how to tell male or female - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 5 Old 05-28-2011, 11:42 PM Thread Starter
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how to tell male or female

i'm new to this. i was wondering how to tell if my molly, and platties are male or female?
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post #2 of 5 Old 05-29-2011, 12:12 AM
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The main difference with all livebearers is that the female has a normal looking fan shaped anal fin, while the males anal fin has turned into a gonopodium (sex organ) and is more spiked shape....pics showing difference taken from Tropical Fish - Breeding Guppies mollies and other livebearers

Female in lieft picture, Male on the right..... Hope this helps!
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post #3 of 5 Old 05-29-2011, 01:56 AM
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The females are almost always bigger in the belly area as they are almost constantly pregnant!!!! When the belly squares off \___/ like this then they should be popping out babies quite soon... Good luck with your new fishies!
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post #4 of 5 Old 05-29-2011, 04:27 PM
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I saved this picture to my computer to help me remember:




The females anal fin is rounded, whereas the males anal fin is pointed.

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post #5 of 5 Old 06-03-2011, 06:26 PM
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Great response beaches!
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