I'll tell you that i'm confused on that particular one since you all go with a male and I kinda wanna say looks femalish to me he/she looks very much like mine now, but she used to be a very confusing one too lol
but it is actually closer to 6" not 7", still for a 8 month female to be that big is not likely unless you feed her super secret formula like Grif lol, so i gotta go with male

Louis - they have them during breeding season.