The first hint to crack the puzzle "__fish swim vertically to blend in" is:

It is a word which contains 7 letters

The second hint to crack the puzzle "__fish swim vertically to blend in" is:

It starts with letter t

The third hint to crack the puzzle "__fish swim vertically to blend in" is:

It ends with letter t

Looking for extra hints for the puzzle "__fish swim vertically to blend in"

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The answer for the puzzle "__fish swim vertically to blend in" is: