Simplify the following text for a Grade 7 native English-speaking person.
Original: The barracuda is a salt water fish of the genus Sphyraena , the only genus in the family Sphyraenidae , and is found in tropical and subtropical oceans worldwide .
Simplified: It is found in tropical and subtropical oceans worldwide . It is of the genus Sphyraena , the only genus in the family Sphyraenidae .