Did you happen to buy it from an LFS in Markham? I ask because I'm in the same boat, except mine is slightly smaller at about 4".I bought a 5" NTT TIGER iin 2 weeks ago. he still doesn't eat anything. It always hide besides the driftwood. his tankmate is 10" HB golden arowana, 8 " indo tiger, 7" flagtail, 8" and 6" peacock bass. I don't see they did bother my NTT. I even bought him a feeder, and it seems he is not interested at all. So, Do u guy have any recommends?