Seven lampreys, as the name suggests, have seven gills. These gills are born behind the eyes in the form of concave holes, just like one small hole after another on the flute surface, just like measuring with a ruler and drawing with a compass. Such a regular and orderly linear arrangement really makes people marvel at the strangeness of nature's creations. In addition, some people mistakenly regard the seven gills as their eyes, so the lamprey has another nickname of "Bamiyan".
Extended data:
Seven lampreys are neither fish nor fowl. Their slender bodies are smooth and scaleless, like snakes and eels, and their long spines run through their bodies. The upper part of the body is bare, and the lower part of the body has dorsal fins, lumbar fins and caudal fins that are unique to fish.
The eyes are flat and round, the white eyes are crystal clear, the texture is excellent, and the pupils are dark and deep, just like a black and expensive diamond inlaid in a pure white marble tiles; The lamprey has a small nostril protruding upward, which is hidden on the top of the head and located between the eyes.
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