race features:
Lockjaw: As a Bonus Action after biting a creature, you can lock your jaw and give your target Disadvantage on Checks to Escape your grapple.
Bloodlust: If you have dealt damage your previous turn, your next attack deals an extra 1d4 + Proficiency of the same damage type you are inflicting.
Bloodied: When are at half your Hit Points (rounded down) attacks that have Advantage allows you to use your Bloodlust trait without having to had dealt damage before.
Description:
"Niho are characterized as the most vicious of the Sawgrim. Reveling and rushing into the thickest points of battle. They seem to get a physically high of the smell of freshly spilt blood. They have longer teeth that are curved slightly to the insides of their mouths. Their dorsal fins are a bit bigger and more ridged then other Sawgrim."