Not to start an argument... but IMO I really dont think sharks think like us. Being crammed in a closet like you reffered to. Yeah it would suck for a shark to be in a 125g tank, but I dont think that they think about being crammed or clostraphobic (sp?). Now, I really dont think you can put a Bamboo in a 125g, but I am just saying that if you did (not reccomended), then the shark would live... just not thrive. So if you dont really care about the shark, then you go right ahead and get a Bamboo shark. Nobody is stopping you...