Red....we had a TSN - about 3' or so...and he was a voracious predator. We could feed him all the beef heart he could eat, he'd have a bellyful and a mouthful, and STILL go after the other fish. He ate 3 full grown tinfoils, and the final straw was a beautiful blue and white OB peacock we just bought for $30...he went into the tank, down six feet, and GULP! TSN lunch. It took me about 6 months of searching to find a home for him - we ended up taking him about 6 hours north to the West Edmonton Mall to their display. He was a very pretty looking fish, temperament of a jerk....can't say that I miss him. Nobody else does either, tank is calm since he left.
I would advise to stay away....unless you purposfully WANT a head ache! LOL
Deb