baby betta

I bought a baby boy betta a few weeks ago and I'd like to know what his gender is. He's an inch long from nose to tail now. He was smaller. He is very active and eats from my fingers.

Hi everyone! I'm new here. I'm looking for opinions on the gender of this baby betta I bought. It's about an inch long right now. I see no egg spot and it's been displaying typical "male" behaviors (flaring, building bubble nests, etc.) but I know that females can do that too. I'd love to hear...