Lantern. The fish has a lantern at the end of a stalk in front of it. The lantern sheds bright light in a five-foot radius and dim light for another five feet. The lantern is far enough away from the fish for the rest of it to only be in dim light.

Water Breathing. The fish can breathe only underwater.

Bite. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 3 (1d6) piercing damage.

Swallow. If the angler fish hits on a Bite attack, it can swallow a Medium or smaller creature if the creature fails a DC 13 Dexterity saving throw. The creature takes 2 (1d4) acid damage each round on its turn while it's in the fish's stomach. If it dies, it is digested and its body is destroyed. The fish can only have one creature swallowed at a time.