The Blacktip reef Shark (Carcharhinus melanopterus) is a species of requiem shark, in the family Carcharhinidae, which can be easily identified by the prominent black tips on its fins (especially on the first dorsal fin and its caudal fin). Among the most abundant sharks inhabiting the tropical coral reefs of the Indian and Pacific Oceans, this species prefers shallow, inshore waters. Its exposed first dorsal fin is a common sight in the region. The blacktip reef shark is usually found over reef ledges and sandy flats, though it has also been known to enter brakish and freshwater environments.

Grey reef shark (Carcharhinus amblyrhynchos) is a species of requiem shark, in the Carcharhinidae family. One of the most common reef sharks in the Indo-Pacific, it is found as far east as Easter island and as far west as South Africa ...