1.3 At the end of the experiment All fish sampled in each set of experiments. By asphyxiation with a solution of 100 ppm Quinaldine then the color. Separately by measuring the brightness (L value) the red - green (a value) and the yellow - blue (b value) the color of the pectoral fins. And the back of the neck by a computer program Adobe Photoshop CS5, then the color is measured as the average color of each fish. To change the exterior color of the fish. In each set of experiments
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