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The name comes from two long transparent beards that grow in the mouth. Their swimming posture is very fast. When they are still, they lean at a 40-degree angle, and their crystal-clear bodies swing slightly. Occasionally, under the refraction of light at the right angle, they will reflect the rainbow-like dreamy color produced by the refraction of sunlight by the prism ... Usually, it is not easy to find their traces without careful observation. At most, they can see a pair of fishbones fluttering, so its other name is "Ghost Fish". There is another similar variety that is also transparent, but its color is light brown.

It's called: coffee glass cat.