Don't misunderstand me, I'm not advocating an adult GATF in a 210. I merely acknowledged that there was one kept on here in such conditions and it was very healthy. Personally, I feel that a 4 by 8 footprint would be ideal for an adult GATF for life, smaller for the other species.
As for VATF, the largest one I've ever seen kept was 22" and nearly two decades old. I honestly doubt that you'll get one any larger than that. It was kept for life in a 300 tall.
The only notable tigers I've seen over 2' have all been in cramped tanks. Woodysun-Taiwan's brevis, a fish LARGER than the current world record, was kept in a tank that looked to be about a 300. Wu Chun had a four foot (!) Gatf in a 11x3x3 tank, far smaller than most of us would intuitively think is neccesary.
Again, it seems as though all the big ones are kept in tanks small enough that they can't get enough speed up to hurt hemselves. As ATF have a turn of speed like an oceanic pelagic predator, this makes a bit of sense.
I've spent years not really pushing my opinion in this, but I think that my opinion carries some weight and maybe I should.
These fish deserve to be the centerpiece of a display tank.
SandNukka15
, if you want an ATF, get a non- gatf species, keep it in that 210 by itself and enjoy it. Do it right and have a showpiece specimen that drops jaws with its beauty. If not, just go buy some SA/CA cichlids and leave the tiger alone because it'll likely get killed by a $9 Oscar before it ever gets big enough to be impressive anyway.