I just got a baby from Petco recently. I have not bred bettas yet so this is my first experience with any kind of fry. I don't know what sex my little one is either but someone in another thread said if they have long ventral fins it's probably a male. (Mine does, and that's disappointing because I am hoping for a girl.
Time will tell as everyone says!)
Currently I am feeding my baby lightly crushed pellets instead of the tropical food they are selling by the babies in my Petco.. I am still surprised they are not selling New Life Spectrum Grow.... She is helping me clean up some weird white bugs on my java fern that seem to eat the plant. (win/win there.)
I've only had the baby a week so far but he/she is doing wonderfully for me. I have her trained to come to my fingers for food and she jumps up and bites my finger. The bowl is on my computer desk and she spends a lot of time watching me when i'm sitting here.
I have her in a half gallon bare bottom bowl with a tiny piece of driftwood with java fern on it, a cork with java moss tied onto it, and a sprig of green hedge floating on the top of the water. She is still so tiny the half gallon bowl looks like a 5 gallon tank would with an adult in it.
I am doing a 100% water change every 2 days. At the moment my fish is only an inch from the tip of her nose to the edge of her tail. (Kind of more like 3/4 inch but close enough.)
They seem like they are pretty hardy. I don't think I will have any problems growing her to adult size.
And yes, you did a wonderful job caring for your little guy!! Thank you for sharing his before and after pictures!!
