The Black Shark.

The White Shark nostrils are very narrow, and the eyes are small,
circular and completely black. On the sides are placed five gill slits,
two triangular-shaped pectoral fins and two near the tail fin, much smaller.
The flow is well developed, as well as the large dorsal fin on its back.

We also have two small fins near the tail. They have the white ventral and dorsal gray or bluish.