As a detective, I first took note of the keywords in the crossword clue, which were ‘brightly colored‘, ‘food‘, and ‘fish‘. This indicated that the answer should be a type of edible fish that is colorful in appearance. I quickly scanned my mental library of fish species and remembered the name ‘opahs‘ – a deep-sea dwelling fish known for its vibrant hues of red, orange and pink. I then researched more about opahs and discovered that it is indeed a food fish commonly used in various cuisines around the world. With this information, I confidently filled in the answer as ‘OPAHS‘ on the crossword puzzle. It was a satisfying conclusion to the mystery that was solved by utilizing my knowledge of marine biology and my detective skills.