The line going from the tail to the head - usually a spotted line with splotchy spots - is the flowerline. A double flowerline measn the fish has one (usually) above the normal flowerline. Your s has a seocnd spot on the base of the tail higher up and then it continues in the middle of its back. It's not a complete double flowerline and only time will tell if it grows a more complete one. Some also have a triple flowerline with one below the normal line.
Female - between the body type and the black mark on the top fin its most likely female.