Cucumber flavored fish is river fish. Cucumber smelt, also known as croaker and large yellow croaker, belongs to Salmonidae, Cucurbitaceae, and the male fish is slender and slightly flat, with a small and sharp head that is longer than the body height. The upper, lower and tongue have villous teeth. The maxillary bone does not reach the lower edge of the eye center, with large eyes, large scales, unobvious lateral lines, and high fins that are higher than the body height. The end of the fat fin is free and flexed, The pectoral fin is small, the tail handle is very thin, its height is only equal to the eye diameter, the tail fin is deeply bifurcated, the back is grass green, slightly
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