Crosshatch trigger Question

[Cimmel1]

Hi everyone. I have a question regarding a newly acquired crosshatch trigger. Shes around 4" and literally eats anything I drop in the tank.
When I bought "her" she had a small yellow spot on her fin. Over the last 2 weeks her fin has developed much more yellow top and bottom. I am hoping that "she" is a "He". I am leaving you with a pic. Please let me know what you think. I know there are a few in here that have experienced xhatch triggers changing sex in their aquariums.
Thanks

 

[bullitr]

Its a female maybe switching to male

 

[Cimmel1]

Thanks for the reply. I'm just wondering if the development of the yellow in the fins is a sign of the trigger changing sex. I know that this is about the size they start changing. Just curious if somebody has experience first hand.
Heres another pic but in this one the yellow is not so obvious

 

[bullitr]

I bought a 3-3.5" male myself
Hopefully it change male are much more colorful

 

[Cimmel1]

Although I've heard of them and seen pics, males that size are not available around here. The smallest I have ever been able to acquire was 6". The store that I bought this one from said he hasn't seen any small ones since he first opened 8 years ago. All the males I've seen in person have been 6+ inches

 

[bullitr]

I had a few small males in the past and I still have one right now