If possible, please record a "total length (TL)" measurement of the recaptured spiny dogfish. By comparing the length at release and recapture, we can estimate the growth rate of these spiny dogfish. The longer the fish is swimming free, the more important the fish measurement!
To identify the total length, measure the spiny dogfish from the tip of the snout to the end of the tail. Pull the tail down to form a straight line with the body.
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