Final answer:
Without additional context, it is not possible to accurately determine where to insert two dashes in the phrase 'World Fish Migration Day' as it stands alone.
Step-by-step explanation:
The insertion of two dashes where needed in the phrase “World Fish Migration Day” would typically indicate a break or emphasis in the sentence structure.
However, without additional context, it's unclear where the dashes should be placed. If dashes are meant to add emphasis or to introduce an explanatory statement, they might be placed before and after an interjected element within a sentence referring to “World Fish Migration Day.”
For example: “Celebrate – World Fish Migration Day – to raise awareness for the importance of open rivers.” Unfortunately, without a sentence to work within, we cannot accurately place the dashes.