Crucian carp is a common freshwater fish. Whiskers are one of the structures of fish, and whether they have whiskers is an important feature when classifying fish. Crucian carp, on the other hand, has no beard, which can be observed when carefully observing crucian carp. Some people confuse crucian carp with other freshwater fish, such as carp, etc. In fact, we can judge crucian carp with other species of fish by beard. For example, the difference between crucian carp and carp includes whether there is a beard, crucian carp has no beard, while carp has beard. Through this distinguishing feature, these two common freshwater fish can be distinguished.
In fact, not only do carp have beards, but many freshwater fish species have beards. For example, catfish, the role of their whiskers is very important, because their vision has deteriorated, in the predation and avoidance of the enemy can not use vision, only with the detection of whiskers, in order to avoid the enemy, protect themselves, and carry out normal predation activities. Different fish have different numbers of whiskers, some have only one pair, the most have five pairs, and the most common are two pairs.
Fish scales are also one of the important structures of fish, and many fish have fish scales. Crucian carp also has scales. Crucian carp scales play a very important role, the most important role is to protect their bodies, blocking the invasion of some harmful bacteria. In addition, fish scales can also regulate their osmotic pressure and maintain osmotic pressure balance. Although fish scales have a very important role, but when eating will affect the taste, the taste of fish scales is very bad, so before eating, you need to scrape off the scales, this work is sometimes more troublesome.
