BTW, my guess of male is solely based on the fin shape and body coloration of the pics you posted. These are not accurate ways to sex, just an educated guess. Typically males show more lighter colors and their pattern kinda makes it look like horizontal barring down the body length. They have the pointier fins and sometimes develop longer trailers that extend past the tail fin. But females can have pointy fins too as you will see with my female.
Here is pics of my breeding pair for comparison, its pretty night and day with mine, but I have seen some pics of females that I would've bet good money were male. Only 100% way to determine is to vent (and know what you're looking at) or observe egg laying. It is said that females will lay eggs regardless of males being present, but my female never did for 2 years until i added the male, they paired up damn near instantly.
Male Top
Female Bottom
When the fry get to free swimming stage she goes nuclear for a few days and she won't even let the male near the fry, backs him up into the upper corner on the other side of the tank. He's kinda a wuss TBH.
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