Female umbees will display some blues when tryin to establish dominance in a tank which is why this one is more colorful. Now as soon as u add a known larger male, their colors will instantly change to the yellow color we are all used to seeing.
Thank you for all your comments...
Below are some further pictures, I also took some pictures of the other Umbee that I am sure about the sex (Female). She is about the 2/3 size of the other and both are from the same batch.
Please let me know if these pictures change your idea.
Below are the further pictures of the one that I am questioning the sex.
I am also going female. Some umbees can be tough to sex without venting at that size just by pics alone. I have a female that when she was without a male looked male herself.