I have a specimen now, my first one. Have always wanted one. In my 20 years of fishkeeping, I've never had a fish with such a, level of CONSTANT prey drive. I took a video of it jumping at least 3" out of the tank multiple times, at a pair of tongs holding a pellet, and grabbing the pellet on one breach. It watches droplets form and fall on the lid, day and night, and at night...whap, it hits some of them...It's kept alone, and will be as it's a pure psycho at only about 3 1/2-4".