So I just got a baby betta from petco today, which I've recently learned isn't exactly the best decision but I'm okay with it as long as I can get it to turn out healthy, which I believe he/she already is... But the only concern I have is I don't exactly know what sex it is... I've looked up all the differences between the two, but since this fish obviously isn't full grown yet, I'm having a hard time figuring it out. I'll try to give you details on it as best as possible and see what you think... If there's anything else I should mention that I forget let me know.
It's anal fins come fairly close to touching it's caudal fin, however there is a very small gap between the two. It's pelvis fins hang below it's anal fins, relatively speaking to it's size. A habit of a female is going into a head down posture while flaring, correct? I don't believe mine does that, although I'm not 110% positive. The majority of the fish is a somewhat bright, deep blue with a little bit of silver/gray on it's belly... It's gotten a little deeper blue since I first brought it home... It flares at his reflection in the glass sometimes... I know this is definitely a habit of males, but I'm not sure if females flare at each other?
Hope this helps you help me! Any answers are much appreciated!