Male or female blue spotted jawfish?

[Grebex11]

I have been trying to find the difference between the male and female jawfish. I have heard that the heads/jaws are smaller on the females. However that doesn't really help if I have nothing to compare it to. I'll try to take a picture of my BSJ if someone could tell me for sure which it is.

 

[reppo13]

The only way to tell is to vent sex. The male will have more equipment down there. They will have two defined holes and the female will have one hole. Anyone correct me if I'm wrong.