Bombfish can be found swimming in the waters of the Lakebed Temple and in hidden Caves in Hyrule Field. The Clawshot can be used to drag one towards Link as well as arm it, allowing it to be used in a manner similar to a regular Water Bombs. If caught while fishing, the Bombfish can be kept as a Water Bomb. It does not have an entry in the Fish Journal, as it is "forbidden" to catch. The main use of a Bombfish is to blow up walls in the Lakebed Temple maze. In the battle with Morpheel, it will release Bombfish from its mouth that will try to attack the young hero as he fights Morpheel.
Names in Other Regions
Bombfish artwork from Hyrule Warriors Legends
↑ 1.01.1"You caught a bombfish! This handy fish can be used as a bomb! Actually, catching this fish is forbidden, so it won't be added to your fish journal." — N/A (Twilight Princess)