Hello i was pondering some thoughts for my future monster tank of 300+ gallons, i currently house a 75G with a 9-10 inch silver Arowana living with a grown ornate bichir, once i have a large tank i was thinking of maybe a RTC that my LFS has had for a long time, he's about 2 ft priced at $150, would the bichir be food for the RTC once he grows bigger ?