sorry, bu t i really hafta disagree with that last thread, b/c IMO in a sw aquarium, most fish(if properly cared for) live much longer than the majority in the ocean, howw many blue tangs, live for a decade and a half in the reef??, less than .001% make it to 2 inches, and even less make it to 5 adn now when you ge tto the fot range, teh percentage is even much lower, now in the home, a properly cared for hippo tang will almost always live for at least a couple of years, making it to at least 5 or 6 inches, adn this can and does keep going
other than that, i do agree with what was said about sharks, adn sharks do not often do well in aquariums, mostly b/c the keepers are not adequately prepared for their particular needs, talk to risc(in our aggressive forum), he has several sharks and knows how to rear them