Library - Castle Grand Hall 1F (Resident Evil 4 Remake)

Appear after acquiring the Bunch of Keys as Ashley. One of the is wandering around the southern area of the room, the other bursts through the door from the Library Passage 2 as you approach.

Inside the large treasure chest behind the bookshelves on the west side of the room. You need to use the Bunch of Keys to open it, specifically the key with the fish-themed handle (2nd from the left).

Appear here in Chapter 10. One is wandering around the north side of the room, the other is on the south side.

Dropped by the Armadura when defeated.