Corrupted Fish Grunt

Breath Sap-  If nothing is covering the target's mouth and the target is grappled by the grunt, the grunt uses its ring of razer sharp teeth to latch on to the target's face. The target must make a DC 13 Constitution Saving Throw, or lose 1 minute of air each round that the grunt is attached to the target's mouth. Additionally, each subsequent Saving throw is made at disadvantage. If the target runs out of air while the grunt is latched, or after it lets go, see Homebrew Choking ruling

Attack. The grunt makes 1 attack

Trident. Melee Weapon Attack: +6 to hit, reach 5 feet, one target. Hit: 11 (1D12 + 4) Piercing Damage