Multiattack

The tusked skyfish makes one gore attack and one tentacles attack.

Gore

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage.

Tentacles

Melee Weapon Attack: +5 to hit, reach 10 ft., one creature. Hit: 13 (3d6 + 3) bludgeoning damage plus 10 (3d6) lightning damage. The target is also grappled (escape DC 13). Until this grapple ends, the target is restrained. While grappling the target, the tusked skyfish can't use this attack against other targets. When the tusked skyfish moves, a Medium or smaller target it is grappling moves with it.

Stench Spray (Recharge 5-6)

The tusked skyfish sprays foul-smelling liquid in a line 20 feet long and 5 feet wide. Each creature in that line must make a successful DC 13 Constitution saving throw or become poisoned for 1 minute. If the saving throw fails by 5 or more, the creature falls unconscious for the same duration. A poisoned creature repeats the saving throw at the end of each of its turns, ending the effect on itself on a success.