Magmafish

 is a collection item. It can be obtained from lava fishing on Crimson Isle, and is in the Fishing Collection. It is used in numerous fishing-related recipes.

Collection
Collecting Magmafish increases the player's Magmafish collection, which grants useful items and perks upon collecting certain amounts of Magmafish.

Fishing
Magmafish can be fished from any lava source block on Crimson Isle. It is a item in the Fishing collection.

Filleting
Odger can exchange all trophy fish in the player's inventory for Magmafish, the amount of which varies by fish type and quality.

Usage
Magmafish can be sold or used as Crafting material. Upon obtaining Magmafish, player will progress their Magmafish Collection.