Trying to figure out the gender of these 3 sapphire gems. Heard that yellow feet means roos but don't see barring (unless I'm confused on what that means). Thought barring would mean very pronounced striping. Also, they didn't really have head spots when purchased. They are about 13 weeks old and 2 of them love to bite. Asked around on Facebook and get different answers so I don't know what to think. Thanks