Ok - first off the "Mini Bull's" real name is actually the Finetooth Shark (Carcharhinus isodon).
Second - for the record my current avatar is of the Atlantic Sharpnose Shark. Which is why I didn't guess that - the look and fin morphology of the Atlantic Sharpnose is quite different from the Blacktip, Blacknose & Finetooth.
Third - the Blacktip shark (Carcharhinus limbatus) is found in the tropical and sub-tropical parts of the Atlantic, the Pacific and the Indian Oceans. So it's a worldwide species - not just the Atlantic. Also the Blacktip is larger (max size is about 33% larger - more than 8 ft) and also has a very different temperment than the Blacktip Reef does.