I discussed with local second best petco
fish person and he said that the datasheet that came with the light blue "baby betta
" labled cups states that they are "too young to be identified at time of shipping" and "could be male OR female roundtail, veiltail and crowntail" Their purpose is to be bought as a first fish or as a baby
fish to raise.
So I'm assuming that its likely more are female than male and more are veiltail than crown or round. I was able to identify a few from stress lines and clear male pattern gill covers, but the rest are actually hard to determine.
If this info could be made sticky/faq I'd appreciate it.