In general, they do not do well in smaller tanks. There are exceptions (what do you feed it?), but IN GENERAL I do not suggest them for smaller tanks as MOST will not survive past a year. If they survive the first month (acclimation), many - maybe most - will die in 9-12 months of starvation. Some will make it through that.
They are not easy to care for...but success seems clearly correlated with an increase in tank size and LR (which is thus correlated with more stable water conditions).
Ricks280 - do you still have it? I am interested in what it ate.