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For Study 3, although previous observations in the growth of rockfish at the Centre for Aquaculture and Environmental Research appeared to reveal a trend whereby the growth rates of the fish increased with rising sea water temperatures and increased photoperiod, the study did not reveal an effect of temperature on fish growth performance. All fish growth rates increased with the seasonal increases in day length and temperatures of spring and summer. By late summer, growth rates decreased as day length declined, even though sea water temperatures were still rising indicating a positive correlation between fish growth rates and photoperiod.
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