Can you help on the sex of my sons dovii

Ssbsh21

Feeder Fish
Apr 10, 2017
3
0
1
39
Ohio
Hello, my son recently got a dovii which he has been wanting for quite a while. It is young (few months) and only about 2 1/2". When he picked it out they all looked exactly the same so we could not decipher males from females. Any help would be appreciated if its even possible at this young age. And if not, when would he/she start changing? He is having a small meltdown because he thinks he got a female. Thanks for your help and I'm sorry for the quality of pic. Will try to get a better one.2017-04-09_13.56.46.jpg
 
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