Most of the animals we see in our lives are vertebrates, and all kinds of animals are of different sizes. The smallest vertebrate in the world is a chubby miniature fish, so small that we can hardly tell it apart. The average adult body length of this fish is only 7mm, which is difficult to see with the naked eye. Although they are very small and the smallest fish in the world, they also have a funny name called Fat Baby Fish, which feels very different from it.

First, the smallest vertebrate in the world-a stout miniature fish, 7 mm.

The smallest vertebrate in the world is a chubby miniature fish found in Australia. Although this fish is the smallest and lightest in the world, its name is interesting. It is called the fat giant salamander. It is very slender and looks like a bug. It has no fins, teeth and scales. The whole body is transparent except for the eyes without pigmentation. Female fish lay eggs when they are 2~4 weeks old, and the "fat giant salamander" usually lives for about 2 months, so it is called "the smallest fish in the world".

On July 8, 2004, in the latest research magazine published by the Australian Museum, Australian scientists officially announced that they had confirmed the smallest and lightest fish in the world. This fish is only about 7mm long and weighs only 1mg. Only one million fish can make up 1kg. It is a well-deserved "little three" among vertebrates.

The average body length of this fish is only 7 mm for males and 8.4 mm for females. I don't think I can swallow even the smallest hook. Scientists have registered this fish as a new species and declared the Guinness Book of Records as the smallest vertebrate in the world.