The most common and most likely answer to this crossword clue is the 7 letter word SASHIMI
I've seen this crossword clue in Independent
S
A
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H
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More clues leading to the result SASHIMI
- Ham is twice mistaken for fish dish
- ‘Pescatarian option’? Ham is doubly out of order!
- In Sainsbury’s, as “him indoors” gets fish
- Mash is ordered with one fish dish
- Tough men greeting male, one making food
- Elite troops greeting Military Intelligence find something fishy
- Japanese scoff and point when male is half-cut
- His aim’s cooking eastern dish
- Ham is repeatedly chopped up for foreign dish
- Dish sent back as one eats something to fill a gap
Buddy explains!

The straight part
We know that "something fishy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case something fishy = sashimi.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SASHIMI mean?
SASHIMI noun- A dish consisting of thin slices or pieces of raw fish or meat.