Does a john dory fish belong to the kosher?

No, John Dory fish is not considered kosher according to Jewish dietary laws.

Here's why:

* Fins and Scales: Kosher fish must have both fins and scales. While John Dory has fins, it has very small, smooth scales that are difficult to see and don't meet the requirements of being "easily removable."

* Other Considerations: The John Dory also has a unique appearance, with a large, flattened body and a prominent, protruding mouth, which might further contribute to its non-kosher status.

Therefore, even though John Dory fish might be delicious, it is not an option for those following kosher dietary guidelines.