from the pearls i have owned they take longer than some ray to mature
i have had a 12inch male with hardly any claspers unless you know what to look for some people would have thought it was a female
my p14s bred at a small disk size of just over 12inch so anything is possable
my 2nd back up male p14 had mature claspers at 7inch
i think captive bred rays are much easyer to breed than wild caught their is another p14 breeder hear in the UK who has a male i sold more than 2yrs ago which was 12inch and fully mature and that has only just bred
i have also been told that if you have 2 females in with 1 male he will normaly only breed with one of the female well my male has just bred with both my females
i was also seeing a bit of aggression between the 2 female after the male had only bred with one of them
its just the luck of the draw