Hello, I just acquired a 12inch tiger shovelnose/ red tail catfish hybrid from the lfs I work at and I was just wondering how big I should expect this guy to grow? he's currently in my 120 gallon with 3 red headed cichlids a female flowerhorn and a tiger datnoid all around the 6 inch mark. for filtration I have a fluval 406 and an aquaclear 110.