food in the Philippines is cheap here sharks eat squid and fish right i can get like about $2/kilo. electric bill is also cheap here around $0.12/kw hehehe... thats why i want to keep a pet shark. i heard someone selling a black tip shark here in Phil. its only about $50 US Dollar converted like 12- 18 inches. thats what i heard but im just curious about bull shark thats why i ask, LFS told me if im going to keep a black tip shark for home aquarium the size of the aquarium is 6x8 ft is ok. but to think of what im reading here in forum you guys got big tank. thats why i ask. for a black tip shark what size is the minimum requirement for him i keep. because i dont believe with the LFS saying they just want to earn money. when i keep a pet i learn to love them with passion not just keeping them.