Sources
CR
Type
Size
Alignment
Movement

Fish

Tiny Beast, Unaligned

Armor Class 13
Hit Points 1 (1d4 - 1)
Speed swim 40 ft.
STR
2
-4
DEX
16
+3
CON
9
-1
INT
1
-5
WIS
7
-2
CHA
2
-4
Senses darkvision 60 ft., passive Perception 8
Languages
Challenge 0 (10 XP)

Traits

Water Breathing. The fish can breathe only underwater.