Fired crew just seconds after piranha initially bit (5)
I believe the answer is:
piece
'bit' is the definition.
(I know that bit can be written as piece)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for piece that I've seen before include "Scrap - musical work" , "Musical composition" , "Portion, coin, item" , "American gun" , "newspaper article" .)