Fish origami method

About the fish origami method is introduced as follows:

First prepare a square piece of cardboard, folded in half, left and right two corners folded to the top corner, the top two corners folded, the bottom two corners folded, the top corner of the top layer folded down, the middle of the edge of the downward folding, the top corner of the folded to the opposite side, scissors to cut the opening of the two places, turn upward along the opening, the top two layers folded inward, draw the fish's eyes, a cute little goldfish on the fold! Good.

: Fish is to gill breathing, through the tail and trunk of the swing and the coordinated role of the fins swimming and feeding with the upper and lower jaw of the variable temperature aquatic vertebrates, belonging to the phylum of chordata in the subphylum of vertebrates, people generally vertebrates are divided into fish (53%), birds (18%), reptiles (12%), mammals (9%), amphibians (8%) of the five major categories.

According to the statistics of the late Canadian scholar Nelson in 1994, there are 24,618 species of fish*** in the world, accounting for more than half of the named vertebrates, and new species of fish are constantly being discovered, an average of about 150 species per year, more than 10 years should have increased by more than 1,500 species of fish, the world's named species of fish is about 32,100.

There are about 32,000 species of fish in the world that have been discovered, and they live in the water, distributed in the ocean and freshwater, with two-thirds of them living in the ocean and the rest in freshwater. China counts two thousand five hundred species, of which more than one hundred species available for medicinal purposes, common medicinal animals are seahorses, sea dragons, eels, carp, crucian carp, sturgeon (swim bladder for swim bladder gel), rhubarb fish (otoliths for fish brain stone) liver oil (vitamin A and vitamin D) the main raw material.