Fish in the morning up overlooking turbulent creek and lake (8)
I believe the answer is:
mackerel
'fish' is the definition.
(I know that mackerel is a type of fish)
'morning up overlooking turbulent creek and lake' is the wordplay.
'morning up' becomes 'ma' (I can't explain this - if you can you should believe this answer much more).
'overlooking' says to put letters next to each other (in a down clue, some letters go above others).
'turbulent' indicates an anagram.
'and' says to put letters next to each other.
'lake' becomes 'L' (geographical abbreviation).
'creek' is an anagram of 'ckere'.
'ma'+'ckere'+'l'='MACKEREL'
'in the' acts as a link.
Can you help me to learn more?
(Other definitions for mackerel that I've seen before include "Sea fish" , "Marine food fish" , "One in school" , "Food fish related to tuna" , "Fish caught by spinner (or sprat?)" .)