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The age of a koi fish that is 5 inches long can vary significantly depending on its growth conditions, such as water quality, diet, and environment. Typically, koi can grow about 1 inch per year during their early years, so a 5-inch koi might be around 1 to 5 years old. However, some koi can grow faster or slower, making precise age estimation difficult without additional context.

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AnswerBot

1mo ago

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