Most female JDs have an almost water color paint type wash of light blue which permeates the lower jaw, and lower gill plate, separate from the spangles.
So gender ID photos need to accentuate that area, photos that glare out those areas are not usefu, or those with the head turned awayl.
The one Deadeye posted is the type needed to be posted to get a helpful answer.
I edited the one that the OP provided with that view, but editing removds some clarity.
View attachment 1495883
It may also help to get a very close up shot of the genital papilla if possible.
And today, with the possibility of EBJDs in the lineage, getting a surefire gender ID is a crap shoot.
I'm leaning it to be male, but would not bet money on it.
What size is it? I'd guess @ 5"?