look on the bottom of its belly for a little white dot its called an egg spot and some other correct name that i cant pronounce lol
okay well look for this:
and this one:
i used to think females could not be any other color but a pale red until i seen blues and purples and cothers wow they are just as fantastic as males are!!
your is so hard because its so dark and white at the same time
Also look at these FEMALES she has an egg spot! and she looks like a male too though if she didnt have that,
and lastly this one!: