Piranha

AC: 13

Initiative: +3 (13)

HP: 1 (1d4 - 1)

Speed: 5 ft., swim 40 ft.

Senses: Darkvision 60 ft., Passive Perception 8

CR: 0 (XP 10; PB +2)

Water Breathing.

The piranha can breathe only underwater.

Actions

Bite.

Melee Attack Roll: +5 (with Advantage if the target doesn't have all its Hit Points), reach 5 ft. Hit: 1 Piercing damage.