Mine is a female approx 4 years old with a 12 inch disc.I've seen retics over 20" diameter. Most don't live long enough. Is yours a male? Males don't usually get as large and females don't reach their true size until they have bred several times. I have rays over 12 years old and they still are growing.
She eats like a pig on most foods I offer but won't take pellets.
She has been no trouble at all really and Co exists well with her tank mates.
