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Hi,
i currently have 2 new marble mollies that i thought of being female, but now I'm confuse, their anal fin seems to be close creating a pointed look but i dont see any tube like that would be a gonopodium...i barely see their anal fin spread out but it moves or bent sometimes like a male gonopodium...i'd really appreciate your help guys...
 

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Those are definitely males. The gonopodium is actually just a modified anal fin that is is pointy like in your pictures rather than always looking exactly like a traditional tube shape. A female's anal fin will not be pointy at all, and will instead be round and fan shaped.
 
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