"What other species belong to the same family as a particular shark?"
To answer this, you need to specify which shark you're asking about. For example, if you're asking about a Great White Shark, it belongs to the family Lamnidae. Other members of this family include:
* Mako sharks (shortfin mako and longfin mako)
* Salmon sharks
* Porbeagle sharks
If you provide the name of the shark, I can tell you what other species are in the same family.