Arapaima with scales Arapaima gigas
![](https://lizzieharper.co.uk/wp-content/uploads/2021/05/Arapaima-gigas-and-scales-extra-500x224.jpg)
Arapaima with scales Arapaima gigas
Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)
Arapaima with scales Arapaima gigas
Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)