The image shows a close up of a small fish on a white background with a scale beside it.
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The image shows a close up of a small fish on a white background with a scale beside it. The scale is likely used to measure the size of the fish, which appears to be a gudgeon. The fish is a light brown color with a white underbelly and a yellowish-orange hue. Its fins are long and thin, and its eyes are small and round.