Armor Class 15 (natural armor)
Hit Points 18 (4d6 + 4)
Speed swim 30 ft.
Senses darkvision 60 ft., passive Perception 11
Languages Abyssal, Ixitxachitl
Challenge 1/4
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) piercing damage.
Barbed Tail. When a creature provokes an opportunity attack from the ixitxachitl, the ixitxachitl can make the following attack instead of using its bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage.
OotA, p. 225