Tantrums over fish being too hot (8)
I believe the answer is:
stifling
'too hot' is the definition.
I can't tell whether this defines the answer.
'tantrums over fish' is the wordplay.
'tantrums' becomes 'fits' ('fit' can be a synonym of 'tantrum').
'over' is a reversal indicator.
'fish' becomes 'ling' (ling is a kind of fish).
'fits' back-to-front is 'stif'.
'stif'+'ling'='STIFLING'
'being' is the link.
Can you help me to learn more?
(Other definitions for stifling that I've seen before include "Oppressively hot and humid" , "really hot" , "Flings it in suffocating manner" , "Unpleasantly hot or airless" , "Smothering or suppressing" .)