A selection of muesli derivatives for the freshwater turtle (6)
I believe the answer is:
slider
'the freshwater turtle' is the definition.
'slider' can be an answer for 'turtle' (slider is a kind of turtle). I'm not certain of the 'the freshwater' bit.
'a selection of muesli derivatives for' is the wordplay.
'a selection of' indicates a hidden word.
'SLIDER' can be found hidden inside 'muesli derivatives for'.
Can you help me to learn more?
(Other definitions for slider that I've seen before include "Sir led (anag) - control mechanism" , "Control knob move up and down or sideways" , "American snack" , "Control such as on a mixing desk" , "Eg, fader control" .)