Tiny amphibian belonging to me picked up (6)
I believe the answer is:
minute
'tiny' is the definition.
(minute can mean small)
'amphibian belonging to me picked up' is the wordplay.
I cannot quite understand how this works, but
'me' could be 'mi' (both are spellings of the musical note) and 'mi' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for minute that I've seen before include "Sixty seconds" , "60 seconds; tiny" , "barely noticeable?" , "Immeasurably small" , "Small, tiny" .)