I can't help you on what sex. :drooling: But your Jag is incredible!!! Man that makes me want to go right out and get one. I love, love, love all the rainbow coloring in it's fins. That is amazing gorgeous color!!!! And you gotta love those teeth too. Does it try to bite you when you clean the tank?
compressed length with a tall body points towards male, as well as what's already been stated - I'm not sure on the exact size or age of the fish, though. So determining based around physical morphology can be sketchy until adulthood.
Those of you who like jaguars should look into red tiger mota's for a nice surprise