Lavafly

The Lavafly is a critter that can be used as bait to fish in lava.

Lavaflies will spawn occasionally in the Underworld at night. They can be caught with a or Golden Bug Net to be carried around and released later, or put in a bottle to be used as furniture and a light source.

Attempting to catch a Lavafly with a standard Bug Net will not work, resulting in 1 damage taken and being inflicted with Burning for 5 seconds.