Armor Class 13
Hit Points 28 (8d8 - 8)
Speed 5 ft., swim 40 ft.
Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses Darkvision 60 ft., passive Perception 8
Languages —
Challenge 1
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny piranha. The swarm can't regain Hit Points or gain Temporary Hit Points.
Water Breathing. The swarm can breathe only underwater.
Bites. m +5 (with Advantage if the target doesn't have all its Hit Points), reach 5 ft. Hit: 8 (2d4 + 3) Piercing damage, or 5 (1d4 + 3) Piercing damage if the swarm is Bloodied.
Monster Manual (2024), p. 370