One with less fluid in the Scillies, say (5)
I believe the answer is:
isles
'the scillies say' is the definition.
I can't judge whether this defines the answer.
'one with less fluid' is the wordplay.
'one' becomes 'i' (Roman numeral).
'with' says to put letters next to each other.
'fluid' indicates an anagram.
'less' is an anagram of 'sles'.
'i'+'sles'='ISLES'
'in' is the link.
Can you help me to learn more?
(Other definitions for isles that I've seen before include "Eyots" , "eg the Scillies" , "Archipelago" , "eg Fiji and Tonga" , "Hebrides, perhaps" .)