Fish sticks = Fish Fingers != seafood sticks
If you said fish sticks to most people in the UK, they'd think you were talking about these:
https://www.tesco.com/groceries/en-GB/products/287149425
A common gastro pub lunch time dish here in the UK is a posh fish finger sandwich, usually hand made fish fingers in a crusty white bread with a tartare sauce.
https://images.squaremeal.co.uk/cloud/article/9374/images/be...