Great barracuda

The great barracuda (Sphyraena barracuda), is a species of large barracuda found in tropical and subtropical oceans worldwide. It is blue-gray above, fading to silverly and white below. Sometimes, a row of dark black bars appears on the upper side, with black blotches on the lower side. The second dorsal fin and the caudal and anal fins can range from dark purple to black with white tips.