Most definitely a male in the front. While females can have longer fins (although it is not as common) looking at this particular fish there are plenty of "male" signifiers. The long ventral fins and the shape of the body is a dead give away that this fish is male. Hopefully your coworkers will learn so that someone doesn't decide to put them in the same tank together for a betta sorority as that would be disastrous.
We have 6 of them in a 30 gallon tank for sale. I keep checking on them to make sure there's no fighting, I've tried everything to get my boss to keep them separate but what she says goes unfortunately
Hopefully they will sell quite quickly since they have been labelled as females as they should be cheaper? but yes keeping them together is asking for trouble once they start fighting they will look dreadful and will not sell, perhaps tell your boss this? that male is gorgeous, he is in a breeder box separate from the female in the pic can they not be kept in breeder boxes for now?