Betta Fish: Age ? Type of betta?

This is my second post to this group. I love how informative and knowledgeable and kind everyone is .

However I’m curious as to what type of betta I have. I think he’s a Half moon but I’m not sure and I’m not sure how old he is either . I got him from a pet store it’s been almost a week since I’ve had him. I was informed they are released to pet stores 6mon-1yr he just seems so small . I’ll also take any other tips or suggestions for new tank and his keeper tank until he is moved to his new homes can’t wait.

Side Note: THIS IS HIS TEMP TANK. I just got him Last week his new tank and plants should be here tomorrow and I’ll have to cycle it. For right now I do water changes every other day and water testing he has a sponge filter in here as well .