Swarm of Piranhas

Medium beast, unaligned

Armor Class 13 (natural armor)

Hit Points 28 (8d8 - 8)

Speed 5 ft., swim 40 ft., climb 2 ft.

str

13 (+1)

dex

16 (+3)

con

9 (-1)

int

1 (-5)

wis

7 (-2)

cha

2 (-4)

Senses darkvision 60 ft., passive Perception 8

Languages -

Challenge 1 (200 XP)

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.

Actions

Bites. Melee Attack Roll: +5 (with Advantage if the target doesn't have all its Hit Points), reach 5 ft. 8 (2d4 + 3) Piercing damage, or 5 (1d4 + 3) Piercing damage if the swarm is Bloodied.