nearly certain retic. You are looking at about 3 years to reach maturity, with good clean water and quality food. Males top out at about 10 inches and females about 14. What size tank you have it in and is it male or female?
will take her? a few years to get 12" disk. my males about 6.5" disk and starting to unroll. and females 8" and ive owned them both less then a year and from about 3-4" disks. from what i understand most rays mature at 1+ yrs and slow down after the initial 2-3 yrs? but will continue to grow like most fish the rest their lives.
my rays also almost always have access to live blackworms and i also feed nightcrawlers to the tank and pellets ( never seen my retics eat them though)