"Tilapia" refers to a species of fish in mozambique that is a species of fish in the genus Mosambique, order Perciformes, Suborder Bulbophyllum, Cichlidae, and Oral-hatched non-crucian carp. Now the term "tilapia" has become a generic term for a variety of fish in the family Tilapia and oreochromis and their hybrid offspring, collectively known in English as Tilapia.
Mozambican mouth-hatched non-crucian carp represented by the tilapia is native to Africa, because it looks like the crucian carp we are familiar with, so when it was introduced to China, it got a nickname for African crucian carp. In fact, it belongs to the cichlid family rather than the carp family, so it is taxonomically far from crucian carp.
In addition to African crucian carp, tilapia has many other names, such as Fushou fish, Wu Guo fish, Vietnamese fish, etc., Hong Kong people call it Jinshan crucian carp, Taiwanese call it Taiwan seabream. Aliases aside, the name "Tilapia" itself is a bit confusing, where did it come from? In the 1950s, tilapia was introduced to Guangxi through Vietnam. Tilapia is written in Vietnamese as Cá rô phi, Cá means fish, rô phi is "perch", so the transliteration of the word "tilapia" is also the meaning of "African perch". Cá rô phi is associated with "African perch", which is very appropriate for the African-produced perch tilapia.
So the relationship between tilapia and crucian carp is simply because it looks a bit like it, and the two are taxonomically distant. Crucian carp, also known as crucian carp. A freshwater fish commonly found in the genus Carp in the family Cyprinidae. The rivers and lakes native to Eurasia are not only the most important food fish in China, but also one of the earliest domesticated fish by humans. Because of its low temperature resistance and low oxygen resistance, it has long been introduced to extensive artificial breeding around the world, and it is the most fertile in late spring and late autumn before and after the breeding season.
The two do look a lot like each other at first glance.