Medium Undead, neutral evil
Armor Class 10
Hit Points 37 (5d8+15)
Speed swim +40, walk +20
Challenge 1/2
Saving Throws wis +0
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 8
Languages understands the languages it knew in life but can’t speak
Stench. Any creature that starts its turn within 5 feet of the cavefish zombie must succeed on a DC 10 Constitution saving throw or be poisoned until the start of its next turn. On a successful saving throw, the creature is immune to the zombie's Stench for 24 hours.
Undead Fortitude. If damage reduces the cavefish zombie to 0 hp, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hp instead.
Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 5 (1d6 + 2) bludgeoning damage.
Source: Tome of Beasts 2 · OGL/Open