ABOUT FISHES
The fish is a vertebrate, skulled animal that lives in the aquatic environment.
The number of known fish is higher than that of mammals, amphibians, reptiles and bird species together. And fish hear! Some portfolios may hear squeak-like sounds, while others (eg sleep) make strange sounds with the help of the bass.
General curiosities from the aquatic world
29000
Fish species
510mill years
The period of the appearance of the first fish species
20 tons
The weight of the largest fish
(whale shark)
