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Why does the Department of Fish and Game attach tags to fish?

April 26, 2017Department fish Tags

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Why does the Department of Fish and Game attach tags to fish?

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Biologists tag fish for many reasons, including: 1. To follow fish movement over time and to ascertain migration patterns. 2. To discover habitat preferences for fish at different ages, or reproductive stage. 3. To determine how fast fish grow. 4. To get information on fish mortality and population size.

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A. Biologists tag fish for many reasons, including: 1. To follow fish movement over time and to ascertain migration patterns. 2. To discover habitat preferences for fish at different ages, or reproductive stage. 3. To determine how fast fish grow. 4. To get information on fish mortality and population size. Each species has a unique life history so researchers must tag individuals of the species in which they are interested. Since the return rate for most fish tagging projects is 5% or less, many fish must be tagged in order to gather meaningful information.