My guess would be Male due to the steeper head profile.I had a M similar looking to yours 2 yrs ago.
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x2Syns are tough fish to sex by appearance. Even adult fish are tough as females can get nuchal humps too.
My guess is male - going by the overall steeper head and elongated body. IME females are more round and have a shorter body. The only thing that makes me question this is the tip of the dorsal. Male fish tend to have a more pronounced point at the end of the dorsal & this looks rounded.