still a little young to tell ..if its getting spotting on the body and fins it would be male but the pic isnt clear enough to see any spotting ....my guess would be female...
Here is a pic of my pair for reference. Some females when young can have slight freckling but not as intense as the males. They also have the nice colors on their fins to. My female has a nice green tinge to her face and blue sheen on her fins. This shot is a bad shot of her.