Interesting and Unbelievable Facts

The blacktip reef shark is one of the three species of sharks (alongside whitetip reef and grey reef sharks) that permanently reside in the Indo-Pacific coral reefs . Unlike the other two sharks that inhabit deep water, these coastal sharks are predominant in the shallow waters of this area. Blacktip reef sharks can enter brackish and freshwater environments. However, this marine  fish   cannot remain longer in this ecosystem due to its inability to tolerate the low salinity of freshwater. In 1998, scientists found a dead blacktip reef shark after suffering from  hemorrhagic septicemia . It happened due to bacterial infection and caused problems in its fins, gills, intestinal walls, and other organs. It was the first such infection discovered in a shark. ( Source ) The most common food for blacktip reef sharks is small fish (mullet, jacks, etc.), crustaceans (shrimp and mantis), and mollusks ( squid , octopus, and cuttlefish). Moreover, these sharks have also been fou...