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The Vault - Fallout Wiki
The Vault - Fallout Wiki
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Fly Fishing
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Quest data
LocationDiamond City
Science! Center
Given ByDoctor Duff
Editor IDFFDiamondCity05
Base ID0002c59b

You're going to go out, and find a Bloatfly Gland. You see, the oversized Bloatfly of today evolved from an earlier species of smaller fly. Radioactive adaptation has resulted in a unique gland that enables it to balance and maintain speed despite its size. So what do you say? Ready to go out and dissect one?


Fly Fishing is a miscellaneous quest in Fallout 4.


Doctor Duff would like to verify her theory that bloatflies can fly and hover despite their size due to a specialized gland evolved through radiation-induced mutations.


  • This straightforward fetch quest requires the player to bring one bloatfly gland back to the good doctor. She will mark an area on the map where one can be found to help with the hunt.

Quest stages

10 Bring a Bloatfly Gland to Doctor Duff
100Quest finished
500Quest failed(Duff dies)
Fallout 4 quests