The first shipment that came in at the Petco I frequent were just normal juvenille betta's, all about 1/4 to 1/2in long. I got a baby betta from this batch who did great until she decided that living outside of the tank was better than inside
. The new ones they have are for SURE culls. They are TINY, 1/8th inch clear things with bent spines. Petco for sure gets these from Thailand or some overseas breeders. I have a post on my discussion with the Petco manager and employee in the breeding section or search my name, it's very interesting. I wish Petco would just start placing these guys in a heated tank then sorting them as they grow. They use tap water with conditioner to do water changes, they live a pretty hard life in these cups that's for sure.