Frenzyfish

Tiny beast
Mundane; hazard
Speed 0 ft., swim 30 ft.

Regions: Feywood, Flowing River, Tangled Forest (jungle pools and rivers)

Schools of carnivorous fish that are found in jungle waterways, frenzyfish are usually docile—despite their name. However, if an injured creature enters the water near a school of these fish, their behavior changes violently. Wounded creatures or those who enter the water alongside one must succeed a DC 17 Dexterity saving throw to avoid the onrush of fish as they attempt to attack. On a failure, it takes 3d6 slashing damage as the frenzyfish rip into their wounds, or half as much damage on a success.