Ive had it for about 3 months now Id say its grown 2 to 3" or so its got a great personality Ive got an asian redtail in a different tank that hardly ever comes out and though Ive read the asians are fast growers mine seems to be stunted its been in a 55 for about 6 months and its grown maybe an inch in that time with weekly 50 percent water changes 76 to 78 degree water temp and regular feeding its still only about 7" and its a year old 