Nice bettas! Are they still on the BBS diet or have you changed it?
Looking at this thread wants me to breed my bettas again after my failed attempt - my fry all lack ventral fins due to the overfeeding of microworms.
How do you hatch your bbs? I haven't really figured out a way to do that yet. Do you just use the simple setup with the 2L bottle or do you use something more advanced?
I didn't feed them microworms, I fed them egg yolk when they were 3 days old until they were 5 days old. On day 6 I fed them bbs. What I do is get a jar fill it to the top, than take a teaspoon of aquarium salt and than put it in, than turn on the air-bubbler and take a teaspoon of bbs and pour it in and than wait like 14 hours and extract the bbs and than feed them and put the rest in a styrofoam cup in the fridge and just feed them until it's almost over and start the process again.
Interesting... how did you prepare the egg yolk? How big is that jar that you're using to hatch the bbs? I have an empty 1g tank that I might use, but then I might need to add more salt.
Also, where did you get your BBS eggs?