I had posted before, but I'll relate my story of the queen we saw. In Springfield , MO, Bass Pro (Ick) built a huge aquarium, 200,00-500,000 gal., I can't remember which. Anyway, they have an adult (at least 20") and it is a beauty. This one was HUGE. We aren't real big fans of Bass Pro, but couldn't resist going to their new aquarium.